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Corvette
C7 Forum
What gas stations to avoid?
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<blockquote data-quote="GMJim" data-source="post: 180436" data-attributes="member: 1873"><p>Getting to the OP's question about whether he should be concerned with ethanol in his fuel, what I do is use Sunoco 94 available at some Petro Canada stations (Old Sunoco stations) here in southern Ontario and has advertised up to 10% ethanol. High compression engines need high octane fuel. My 2011 ZR1 owners manual says use a minimum of 91 octane but recommends 93. Your car's fuel system is designed for up to 10% ethanol but what your owners manual does not tell you is if you store your car for 5 or 6 months of the winter the ethanol will separate and being slightly heavier than gasoline will settle to the bottom of the tank. When you start the car for the first time in the spring you'll be running on 100% ethanol for a short time. Will this hurt the engine? I've asked the experts and get differences of opinion. What I do is run the 94 all summer but try to make the last tank for storage Shell 91 with NO ethanol. ALL of my small engines get NON ethanol Shell 91 as over the years I've had the fuel systems on my lawnmower, pressure washer, weed whacker and others fuel systems deteriorate and leak badly. The only piece of equipment I have that states ethanol fuel up to 10% is ok is my new John Deere lawn tractor. If you don't have non ethanol fuel in your area use a fuel/ethanol stabilizer for small engines and car storage.</p><p>Not saying I'm right! Just what I do.</p></blockquote><p></p>
[QUOTE="GMJim, post: 180436, member: 1873"] Getting to the OP's question about whether he should be concerned with ethanol in his fuel, what I do is use Sunoco 94 available at some Petro Canada stations (Old Sunoco stations) here in southern Ontario and has advertised up to 10% ethanol. High compression engines need high octane fuel. My 2011 ZR1 owners manual says use a minimum of 91 octane but recommends 93. Your car's fuel system is designed for up to 10% ethanol but what your owners manual does not tell you is if you store your car for 5 or 6 months of the winter the ethanol will separate and being slightly heavier than gasoline will settle to the bottom of the tank. When you start the car for the first time in the spring you'll be running on 100% ethanol for a short time. Will this hurt the engine? I've asked the experts and get differences of opinion. What I do is run the 94 all summer but try to make the last tank for storage Shell 91 with NO ethanol. ALL of my small engines get NON ethanol Shell 91 as over the years I've had the fuel systems on my lawnmower, pressure washer, weed whacker and others fuel systems deteriorate and leak badly. The only piece of equipment I have that states ethanol fuel up to 10% is ok is my new John Deere lawn tractor. If you don't have non ethanol fuel in your area use a fuel/ethanol stabilizer for small engines and car storage. Not saying I'm right! Just what I do. [/QUOTE]
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Corvette
C7 Forum
What gas stations to avoid?
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