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05-14-2008, 08:45 PM | #1 | |
AF Newbie
Join Date: Jan 2007
Location: Lake Wales, Florida
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Fuel grade
Wondering what grade fuel owners are using.
I have never run anything but premium until the other day when by mistake I filled the tank with regular. The car runs just fine on that grade of fuel. Suprise , suprise, I had visions of knocking, pinging and poor performance, actually I can' t tell the difference. So what is my long range plan, who knows.. |
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05-23-2008, 12:55 PM | #2 | |
Kind of a Big Deal
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Re: Fuel grade
also depends on your climate, real warm areas are prone to knocking more than cooler areas. i would try middle grade first before jumping all the way down to regular.
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01-25-2010, 11:48 PM | #3 | |
AF Newbie
Join Date: Jan 2010
Location: Franklin, Tennessee
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Re: Fuel grade
Your going to have more long term bad effect such as the fuel not being burned as long which leads to the rod bearings wearing out.
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01-26-2010, 01:07 AM | #4 | |
AF Regular
Join Date: Jan 2010
Location: werty
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Re: Fuel grade
all depends on what engine your running it in. If its a high compression engine will have more power and better mileage. If you run regular in a high compression engine the knock sensor will retard the ignition timing to prevent detonation. the result will be less power and less mpg.
If you have a engine that doesn't require premium fuel; premium it is just a waste of money. Why?? 1. there is less heat energy in premium fuel (look at the flashpoints of the fuel). therefore regular fuel in a low comp engine will burn hotter, cleaner and create more power than premium in a low comp engine. Look what people run in the stock 4cy class at the racetracks...premium fuel slows them down. 2. premium doesn't burn any cleaner. both have detergents a high compression engine that can utilize the higher octane fuel so premium in these engine have some benefits |
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