{"id":11168,"date":"2023-10-25T11:51:59","date_gmt":"2023-10-25T18:51:59","guid":{"rendered":"https:\/\/blog2.neighbor.com\/storage-blog\/?p=11168"},"modified":"2024-01-29T15:26:36","modified_gmt":"2024-01-29T22:26:36","slug":"boat-gas-tank-completely-filled","status":"publish","type":"post","link":"https:\/\/www.neighbor.com\/storage-blog\/boat-gas-tank-completely-filled\/","title":{"rendered":"Boat Fueling 101: Why Should a Boat Gas Tank Never Be Completely Filled?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><p class=\"wp-block-paragraph\">Of all the rules and regulations that apply to boat owners, <strong>how to properly refuel your boat&rsquo;s tank<\/strong> is of utmost importance. Engine damage and explosion risk are just two of the <a href=\"https:\/\/www.discoverboating.com\/resources\/misfuel\" target=\"_blank\">misfuelling dangers<\/a> that could result from improper fueling.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The most important takeaway of all? <\/strong><em>A boat gas tank should <\/em><strong><em>never be completely filled<\/em>.&nbsp;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fueling to <strong>90% of your boat tank&rsquo;s capacity<\/strong> is considered best practice.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you&rsquo;ve found yourself asking why a boat gas tank should never be completely filled, you&rsquo;re in the right place. We will show you <em>how to stay safe, keep your boat in great condition, and avoid <\/em>posing <em>any environmental hazards. <\/em><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/lh7-us.googleusercontent.com\/3ZSTsScDKqsni4OBp41NCuVoQ0FaYCwLtjnCR2G_zDuMnjYIaiMAyzZs55rzDJHzTCii51ZsEyYvPTGStQUGP6TSt4Q15mSuWUR8SU2L1601zUCm-0VFzb1-EwwELogyTB5b-Amcnxpzojd0nermHT8\" ><\/figure>\n\n\n\n<h2 id=\"risks-and-consequences-of-overfilling-boat-gas-tank\" class=\"wp-block-heading\">Risks and Consequences of Overfilling Boat Gas Tank&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you are still not sold on the idea that your boat gas tank can&rsquo;t be filled to 100% capacity, here&rsquo;s a list of risks and complications to keep in mind.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Overfilling can lead to <strong>fuel spilling<\/strong> overboard, resulting in environmental complications.<\/li>\n\n\n\n<li><strong>Fuel can expand<\/strong> when temperature changes and cause damage to the fuel system.<\/li>\n\n\n\n<li><a href=\"https:\/\/help.summitracing.com\/app\/answers\/detail\/a_id\/5242\/~\/what-is-vapor-lock%3F#:~:text=Vapor%20lock%20occurs%20when%20liquid,Loss%20of%20power\" target=\"_blank\">Vapor lock<\/a> can occur when fuel vaporizes and causes the engine to stall&nbsp;<\/li>\n\n\n\n<li><strong>Spilled fuel creates a fire hazard<\/strong>, especially near electrical equipment.&nbsp;<\/li>\n\n\n\n<li>Fuel spills have a detrimental impact on marine life and water quality.&nbsp;<\/li>\n<\/ul>\n\n\n\n<html><body><div id=\"in_post\">\n    <div class=\"variant\">\r\n\t\t<a href=\"https:\/\/www.neighbor.com\/boat-storage-near-me\" onclick=\"rudderanalytics.track('press editorial cta button', {location: 'first in post', version: '2.2'}, () =&gt; { console.log('track call'); });\">\r\n\t\t  <div class=\"first-in-post-cta\">\r\n\t\t    <header>\r\n\t\t      <h2 id=\"how-neighbor-is-changing-boat-storage\">How Neighbor is changing boat storage<\/h2>\r\n\t\t    <\/header>\r\n\t\t    <section>\r\n\t\t      <div class=\"service-option\">\r\n\t\t        <div class=\"service-option-icon\">\r\n\t\t          <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"60\" height=\"60\" viewbox=\"0 0 60 60\" fill=\"none\">\r\n\t\t            <path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M13.125 9.375C11.0539 9.375 9.375 11.0539 9.375 13.125V46.875C9.375 48.9461 11.0539 50.625 13.125 50.625H46.875C48.9461 50.625 50.625 48.9461 50.625 46.875V13.125C50.625 11.0539 48.9461 9.375 46.875 9.375H13.125ZM28.125 16.875C28.125 15.8395 28.9645 15 30 15C31.0355 15 31.875 15.8395 31.875 16.875V20.625H35.625C36.6605 20.625 37.5 21.4645 37.5 22.5C37.5 23.5355 36.6605 24.375 35.625 24.375H26.25C25.2145 24.375 24.375 25.2145 24.375 26.25C24.375 27.2855 25.2145 28.125 26.25 28.125H33.75C36.8566 28.125 39.375 30.6434 39.375 33.75C39.375 36.8566 36.8566 39.375 33.75 39.375H31.875V43.125C31.875 44.1605 31.0355 45 30 45C28.9645 45 28.125 44.1605 28.125 43.125V39.375H22.5C21.4645 39.375 20.625 38.5355 20.625 37.5C20.625 36.4645 21.4645 35.625 22.5 35.625H33.75C34.7855 35.625 35.625 34.7855 35.625 33.75C35.625 32.7145 34.7855 31.875 33.75 31.875H26.25C23.1434 31.875 20.625 29.3566 20.625 26.25C20.625 23.1434 23.1434 20.625 26.25 20.625H28.125V16.875Z\" fill=\"#005EB8\"><\/path>\r\n\t\t          <\/svg>\r\n\t\t        <\/div>\r\n\t\t        <h3 id=\"transparent-monthly-savings\">Transparent monthly savings<\/h3>\r\n\t\t        <p>Renters save 30-50% on boat storage, on average. No rate hikes.<\/p>\r\n\t\t      <\/div>\r\n\t\t      <div class=\"service-option\">\r\n\t\t        <div class=\"service-option-icon\">\r\n\t\t          <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"76\" height=\"60\" viewbox=\"0 0 76 60\" fill=\"none\">\r\n\t\t\t\t\t\t\t<path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M37.55 14.4843C39.5632 13.3249 42.1354 14.2561 42.9397 16.4356L46.0933 24.9814L61.7664 24.5065C65.0406 24.4072 66.8592 28.2589 64.7021 30.7241L60.9809 34.977L60.968 34.9917L57.1326 39.375L66.1251 39.375V37.5C66.1251 36.4645 66.9646 35.625 68.0001 35.625C69.0357 35.625 69.8751 36.4645 69.8751 37.5V39.375H71.7501C72.7857 39.375 73.6251 40.2145 73.6251 41.25C73.6251 42.2856 72.7857 43.125 71.7501 43.125H69.8751V45.9375C69.8751 46.9731 69.0357 47.8125 68.0001 47.8125C66.9646 47.8125 66.1251 46.9731 66.1251 45.9375V43.125L39.8751 43.125C39.6698 43.125 39.4722 43.092 39.2873 43.031C38.2539 45.2987 35.9673 46.875 33.3126 46.875C30.6948 46.875 28.4349 45.3422 27.3817 43.125H24.2436C23.1903 45.3422 20.9305 46.875 18.3126 46.875C15.6579 46.875 13.3714 45.2987 12.3379 43.031C12.153 43.092 11.9554 43.125 11.7501 43.125H6.12512C5.08959 43.125 4.25012 42.2856 4.25012 41.25C4.25012 40.4184 4.7915 39.7133 5.54104 39.4678L3.10927 30.9566C2.43776 28.6063 4.15819 26.2522 6.6014 26.1781L17.9522 25.8342C18.0593 25.7316 18.1804 25.6402 18.3147 25.5628L37.55 14.4843ZM24.8087 39.375H26.8166C27.2715 36.1948 30.0066 33.75 33.3126 33.75C36.6191 33.75 39.3544 36.1953 39.8088 39.3762C39.8308 39.3754 39.8529 39.375 39.8751 39.375L52.1497 39.375L55.4308 35.6252H43.6253C42.5898 35.6252 41.7503 34.7858 41.7503 33.7502C41.7503 32.7147 42.5898 31.8752 43.6253 31.8752H58.712L61.88 28.2547L6.71499 29.9264L9.4146 39.375H11.7501C11.7723 39.375 11.7944 39.3754 11.8164 39.3762C12.2708 36.1953 15.0062 33.75 18.3126 33.75C21.6187 33.75 24.3538 36.1948 24.8087 39.375ZM25.7685 25.5973L42.1404 25.1012L39.4216 17.7339L25.7685 25.5973ZM15.5001 40.3125C15.5001 41.8658 16.7593 43.125 18.3126 43.125C19.8659 43.125 21.1251 41.8658 21.1251 40.3125C21.1251 38.7592 19.8659 37.5 18.3126 37.5C16.7593 37.5 15.5001 38.7592 15.5001 40.3125ZM30.5001 40.3125C30.5001 41.8658 31.7593 43.125 33.3126 43.125C34.8659 43.125 36.1251 41.8658 36.1251 40.3125C36.1251 38.7592 34.8659 37.5 33.3126 37.5C31.7593 37.5 30.5001 38.7592 30.5001 40.3125Z\" fill=\"#005EB8\"><\/path>\r\n\t\t\t\t\t\t\t<\/svg>\r\n\t\t        <\/div>\r\n\t\t        <h3 id=\"keep-your-boat-nearby\">Keep your boat nearby<\/h3>\r\n\t\t        <p>With locations in every state, the perfect boat spot is already near you.<\/p>\r\n\t\t      <\/div>\r\n\t\t      <div class=\"service-option\">\r\n\t\t        <div class=\"service-option-icon\">\r\n\t\t          <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"60\" height=\"60\" viewbox=\"0 0 60 60\" fill=\"none\">\r\n\t\t            <path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M30 7.5C25.5499 7.5 21.1998 8.8196 17.4997 11.2919C13.7996 13.7643 10.9157 17.2783 9.21272 21.3896C7.50975 25.501 7.06417 30.025 7.93234 34.3895C8.80051 38.7541 10.9434 42.7632 14.0901 45.9099C17.2368 49.0566 21.2459 51.1995 25.6105 52.0677C29.975 52.9358 34.4991 52.4903 38.6104 50.7873C42.7217 49.0843 46.2357 46.2004 48.7081 42.5003C51.1804 38.8002 52.5 34.4501 52.5 30C52.5 24.0326 50.1295 18.3097 45.9099 14.0901C41.6903 9.87053 35.9674 7.5 30 7.5ZM41.5295 26.7545C42.7193 25.5646 42.7193 23.6354 41.5295 22.4455C40.3396 21.2556 38.4104 21.2556 37.2205 22.4455L26.7061 32.96L22.7795 29.0334C21.5896 27.8435 19.6604 27.8435 18.4705 29.0334C17.2807 30.2232 17.2807 32.1524 18.4705 33.3423L24.5516 39.4234C25.123 39.9948 25.898 40.3158 26.7061 40.3158C27.5142 40.3158 28.2891 39.9948 28.8605 39.4234L41.5295 26.7545Z\" fill=\"#005EB8\"><\/path>\r\n\t\t          <\/svg>\r\n\t\t        <\/div>\r\n\t\t        <h3 id=\"storage-made-simple\">Storage made simple<\/h3>\r\n\t\t        <p>Don't settle for stone age tech and long contracts. Neighbor makes it easy.<\/p>\r\n\t\t      <\/div>\r\n\t\t    <\/section>\r\n\t\t    <footer>\r\n\t\t      <button>Search nearby boat storage <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"25\" height=\"24\" viewbox=\"0 0 25 24\" fill=\"none\">\r\n\t\t          <path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M11 2.90625C9.4981 2.90625 8.02993 3.35162 6.78114 4.18603C5.53236 5.02044 4.55905 6.20642 3.98429 7.594C3.40954 8.98157 3.25916 10.5084 3.55217 11.9815C3.84517 13.4545 4.56841 14.8076 5.63041 15.8696C6.69242 16.9316 8.04549 17.6548 9.51854 17.9478C10.9916 18.2408 12.5184 18.0905 13.906 17.5157C14.4508 17.29 14.9646 17.0029 15.4382 16.6618L19.5132 20.7368C19.9892 21.2127 20.7608 21.2127 21.2368 20.7368C21.7127 20.2608 21.7127 19.4892 21.2368 19.0132L17.1618 14.9382C17.2137 14.8661 17.2645 14.793 17.314 14.7189C18.1484 13.4701 18.5938 12.0019 18.5938 10.5C18.5938 8.48601 17.7937 6.55451 16.3696 5.13041C14.9455 3.7063 13.014 2.90625 11 2.90625ZM14.7493 14.0398C14.9463 13.8311 15.1264 13.6054 15.2873 13.3647C15.8538 12.5167 16.1562 11.5198 16.1562 10.5C16.1562 9.13248 15.613 7.82096 14.646 6.85398C13.679 5.887 12.3675 5.34375 11 5.34375C9.98019 5.34375 8.98328 5.64616 8.13534 6.21273C7.2874 6.77931 6.62651 7.58461 6.23625 8.52679C5.84599 9.46897 5.74387 10.5057 5.94283 11.5059C6.14178 12.5061 6.63287 13.4249 7.35398 14.146C8.0751 14.8671 8.99385 15.3582 9.99407 15.5572C10.9943 15.7561 12.031 15.654 12.9732 15.2638C13.5557 15.0225 14.086 14.6777 14.5398 14.2493C14.5699 14.2108 14.6028 14.1737 14.6382 14.1382C14.6737 14.1028 14.7108 14.0699 14.7493 14.0398Z\" fill=\"#EFF5F8\"><\/path>\r\n\t\t        <\/svg>\r\n\t\t      <\/button>\r\n\t\t    <\/footer>\r\n\t\t  <\/div>\r\n\t\t<\/a>\r\n\t<\/div>\n  <\/div><\/body><\/html><h2 id=\"the-science-of-fuel-expansion-and-boat-gas-tanks\" class=\"wp-block-heading\">The Science of Fuel Expansion and Boat Gas Tanks<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fuel expands and contracts with <a href=\"https:\/\/www.neighbor.com\/storage-blog\/how-to-winterize-a-boat\/\">temperature changes,<\/a> which can lead to pressure issues in a tank that is completely filled. This phenomenon, known as <strong>thermal expansion,<\/strong> applies to all substances that <strong><em>expand<\/em><\/strong> upon heating and <strong><em>contract<\/em><\/strong> upon cooling.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It&rsquo;s essential to leave some air space in the tank to accommodate temperature fluctuations and prevent over-pressurization. This <strong>air space functions as a safety valve,<\/strong> protecting against pressure-related issues and enabling adaptability when the fuel fluctuates due to temperature variations.&nbsp;<\/p>\n\n\n\n<h2 id=\"the-importance-of-proper-fueling-in-boating\" class=\"wp-block-heading\">The Importance of Proper Fueling in Boating<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A boat gas tank should never be filled 100% of the way. While a fully-filled tank may mean fewer trips to the fueling station, no amount of inconvenience is worth a life-and-death situation.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Overfilling the gas tank can lead to a range of problems, such as<strong> safety hazards, decreased fuel efficiency, and environmental damage. <\/strong>Curious about what risks are involved, exactly? Keep reading.&nbsp;<\/p>\n\n\n\n<h3 id=\"minimizes-safety-risk\" class=\"wp-block-heading\">Minimizes safety risk&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Most boat fires and explosions occur while fueling<\/strong> (or shortly after that).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exceeding the recommended capacity of a boat&rsquo;s gas tank can result in severe safety risks. For example,<strong> overfililng could lead to a fuel leak<\/strong>. If the leaking fuel comes in contact with flammable objects or fluids, boat owners like yourself could sustain severe injuries.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One way to ensure responsible fueling is by using a fuel nozzle that <strong>prevents overfilling<\/strong> and facilitates proper gas tank ventilation.&nbsp;&nbsp;<\/p>\n\n\n\n<h3 id=\"promotes-ultimate-fuel-efficiency\" class=\"wp-block-heading\">Promotes Ultimate Fuel Efficiency<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">More fuel on board will increase overall fuel consumption. <strong>More cargo = more weight your bow will have to tow. <\/strong>Calculate your trips carefully, and never fill a tank with excess fuel.&nbsp;<\/p>\n\n\n\n<html><body><div id=\"2_in_post\">\n    <a href=\"https:\/\/www.neighbor.com\/search?can_store_vehicle=true&amp;min_length=16&amp;min_width=10&amp;overrideTitle=Boat%20Storage&amp;storing=Boat&amp;types%5B%5D=Carport&amp;types%5B%5D=Driveway&amp;types%5B%5D=Garage&amp;types%5B%5D=Parking%20Lot&amp;types%5B%5D=Unpaved%20Lot&amp;types%5B%5D=Street%20Parking&amp;types%5B%5D=Warehouse&amp;types%5B%5D=Other\" onclick=\"rudderanalytics.track('press editorial cta button', {location: 'second in post', version: '2.0'}, () =&gt; { console.log('track call'); });\">\r\n  <div class=\"second-in-post-cta\">\r\n    <section>\r\n      <div class=\"service-option\">\r\n        <h2 id=\"save-up-to-1200-year-on-boat-storage\">Save up to $1,200\/year on boat storage<\/h2>\r\n        <button>Search in your area\r\n          <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"25\" height=\"24\" viewbox=\"0 0 25 24\" fill=\"none\">\r\n            <path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M11 2.90625C9.4981 2.90625 8.02993 3.35162 6.78114 4.18603C5.53236 5.02044 4.55905 6.20642 3.98429 7.594C3.40954 8.98157 3.25916 10.5084 3.55217 11.9815C3.84517 13.4545 4.56841 14.8076 5.63041 15.8696C6.69242 16.9316 8.04549 17.6548 9.51854 17.9478C10.9916 18.2408 12.5184 18.0905 13.906 17.5157C14.4508 17.29 14.9646 17.0029 15.4382 16.6618L19.5132 20.7368C19.9892 21.2127 20.7608 21.2127 21.2368 20.7368C21.7127 20.2608 21.7127 19.4892 21.2368 19.0132L17.1618 14.9382C17.2137 14.8661 17.2645 14.793 17.314 14.7189C18.1484 13.4701 18.5938 12.0019 18.5938 10.5C18.5938 8.48601 17.7937 6.55451 16.3696 5.13041C14.9455 3.7063 13.014 2.90625 11 2.90625ZM14.7493 14.0398C14.9463 13.8311 15.1264 13.6054 15.2873 13.3647C15.8538 12.5167 16.1562 11.5198 16.1562 10.5C16.1562 9.13248 15.613 7.82096 14.646 6.85398C13.679 5.887 12.3675 5.34375 11 5.34375C9.98019 5.34375 8.98328 5.64616 8.13534 6.21273C7.2874 6.77931 6.62651 7.58461 6.23625 8.52679C5.84599 9.46897 5.74387 10.5057 5.94283 11.5059C6.14178 12.5061 6.63287 13.4249 7.35398 14.146C8.0751 14.8671 8.99385 15.3582 9.99407 15.5572C10.9943 15.7561 12.031 15.654 12.9732 15.2638C13.5557 15.0225 14.086 14.6777 14.5398 14.2493C14.5699 14.2108 14.6028 14.1737 14.6382 14.1382C14.6737 14.1028 14.7108 14.0699 14.7493 14.0398Z\" fill=\"#EFF5F8\"><\/path>\r\n          <\/svg>\r\n        <\/button>\r\n      <\/div>\r\n    <\/section>\r\n  <\/div>\r\n<\/a>\n  <\/div><\/body><\/html><h2 id=\"how-full-should-your-boat-gas-tank-be-before-storage\" class=\"wp-block-heading\">How Full Should Your Boat Gas Tank Be Before Storage?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It is recommended to store a boat with an <strong><em>almost full<\/em><\/strong> gas tank. Just like you would when refueling before a boating excursion, you&rsquo;ll want to <strong>fill your boat&rsquo;s tank to 90% capacity<\/strong> when storing for the off-season.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Keeping the boat with about 90% fuel<strong> <\/strong>capacity<strong> <\/strong>will displace any air and eliminate the opportunity for condensation to form inside the tank.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because extreme temperature fluctuations can lead to <a href=\"https:\/\/www.neighbor.com\/storage-blog\/how-long-can-gas-sit-in-a-car\/\">fuel degradation<\/a>, you may want to consider climate-controlled options for <a href=\"https:\/\/www.neighbor.com\/storage-blog\/dry-boat-storage\/\">storing your boat<\/a>. Check out <a href=\"https:\/\/www.neighbor.com\/boat-storage-near-me\">Neighbor, a self-storage marketplace<\/a> where you can find enclosed, climatized storage spaces.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/lh7-us.googleusercontent.com\/Nx20zPYi9Sg0qDfFeeJsgoSLAkQJnFoPsxVG_UFnjoLLhiXUP099dFHDqqUk2YkJOHrvaU_YUio8bqQ3lnqpqohz3QGDHDtEh6ahTeAm-PtDx2CAA_KpamTn-uGsMQB5l0Af6fTHeOOFCoI3sgaDBs4\" ><\/figure>\n\n\n\n<h2 id=\"how-to-fill-boat-gas-tank\" class=\"wp-block-heading\">How To Fill Boat Gas Tank&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Potential accidents can be averted by adhering to guidelines for safe and efficient boat fueling. Following the proper filling level, fuel selection, and <a href=\"https:\/\/www.neighbor.com\/storage-blog\/boat-maintenance-guide\/\">regular maintenance <\/a>are all essential for <strong>safe and efficient boat operation.<\/strong><\/p>\n\n\n\n<h3 id=\"correct-fueling-level\" class=\"wp-block-heading\">Correct Fueling Level<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The proper filling level for boat gas tanks is to fill them almost full, leaving a <strong>small allowance for fuel expansion<\/strong>.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guideline helps to <strong>prevent over-pressurization of the tank<\/strong>, which can result in engine damage, environmental hazards, and safety threats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Boat owners should look to <strong>fill the tank at about 90%.<\/strong> When fueling, listen<strong> for air bubbles or a gurgling noise<\/strong> &mdash; both are indications that you&rsquo;re nearing the top of the fuel tank.&nbsp;<\/p>\n\n\n\n<h3 id=\"fuel-selection\" class=\"wp-block-heading\">Fuel Selection<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing the correct boat fuel is fundamental to safe and efficient boating excursions. By selecting the appropriate fuel for your boat, you can prevent engine damage and ensure optimal performance on the water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When refueling your boat, look for fueling stations that offer<strong> <\/strong><a href=\"https:\/\/www.pure-gas.org\/\" target=\"_blank\"><strong>ethanol-free gasoline<\/strong><\/a> or, at the very least, fuel with<strong> <\/strong>a <strong><em>maximum <\/em>of 10% ethanol content.&nbsp;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Avoid E15 and E85<\/strong> due to the potential for harm to marine engines. When this type of fuel is left in the tank for an extended period, the ethanol can absorb water, leading to phase separation in boat gas tanks. Where phase separation occurs, <strong><em>engine damage<\/em><\/strong> and <strong><em>fuel waste<\/em><\/strong> are common.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Using fuel with <\/strong><a href=\"https:\/\/boattest.com\/article\/beware-dangers-ethanol\" target=\"_blank\"><strong>a maximum of 10% ethanol content<\/strong><\/a> and storing the fuel in an airtight receptacle is essential in preventing phase separation.<\/p>\n\n\n\n<h3 id=\"routine-maintenance\" class=\"wp-block-heading\">Routine Maintenance:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Fuel system issues can be <strong>identified through visual inspections<\/strong>, fuel pressure testing, and routine checks for fuel leaks. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once a year, have a professional check for any fuel tank issues as part of your regular service.&nbsp;<\/p>\n\n\n\n<h3 id=\"safety-during-fueling\" class=\"wp-block-heading\">Safety During Fueling&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When <a href=\"https:\/\/www.neighbor.com\/storage-blog\/before-fueling-your-boat\/\">fueling a boat<\/a>, being aware of potential risks is vital. To avoid life-threatening mishaps, use the correct fuel type and inspect the fuel system regularly.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Keep the boat turned off when fueling to<strong> avoid the potential of an electrical spark <\/strong>and static electricity.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition, be careful to avoid fuel spills. For more information on how to prevent fuel spills, check out this resource <a href=\"https:\/\/www.boatus.com\/expert-advice\/expert-advice-archive\/2021\/february\/preventing-fuel-spills#:~:text=Use%20absorbent%20sheets%20or%20pads,and%20leaking%20into%20the%20water.\" target=\"_blank\">here<\/a>.&nbsp;<\/p>\n\n\n\n<h2 id=\"summary\" class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Filling your boat&rsquo;s tank is a bit more involved than filling the tank of your car. Ensure you are smart about your fuel system components and never try to top off the tank. Fuel spills and fuel safety hazards are major (and expensive) problems impacting boat owners, and they can all be avoided.&nbsp;<\/p>\n\n\n\n<h2 id=\"frequently-asked-questions\" class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<h3 id=\"is-it-better-to-store-a-boat-with-a-full-tank-of-gas\" class=\"wp-block-heading\">Is It Better to Store a Boat With a Full Tank of Gas?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It&rsquo;s best to store a boat with a tank that is about 90% full of gas. This leaves the tank less susceptible to issues with moisture and fuel vapors. In addition, tanks that are 90% filled won&rsquo;t leak while in storage.&nbsp;<\/p>\n\n\n\n<h3 id=\"why-are-boat-fuel-tanks-vented\" class=\"wp-block-heading\">Why Are Boat Fuel Tanks Vented?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Boat fuel tanks are vented to prevent overpressure, minimize vapor buildup, and prevent the risk of explosion.&nbsp;<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"Of all the rules and regulations that apply to boat owners, how to properly refuel your boat&rsquo;s tank&hellip;\n","protected":false},"author":34,"featured_media":11170,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"footnotes":""},"categories":[191],"tags":[],"class_list":["post-11168","post","type-post","status-publish","format-standard","has-post-thumbnail","category-boat-ownership","cs-entry","cs-video-wrap"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Boat Fueling 101: Why Should a Boat Gas Tank Never Be Completely Filled? - Neighbor Blog<\/title>\n<meta name=\"description\" content=\"Fueling to 90% of your boat tank\u2019s capacity is considered best practice. 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