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Just a thought for the guys who get lousy gas mileage.

Are you using regular or premium grade gasoline?

Regular gas in a Wingwill deliver better fuel economy and can also help the engine run cooler.

I know a lot of guys think they are doing their bikes a service by using premium, but, you really aren't. Only use premium if you hear preignition or pingingfrom the engine and even then find out what the problem is that is causing the preignition. Usually it's simply carbon build up which creates hot spots and displaces fuel and air to raise compression ratio.

The difference is minimal, but, performancemay be enhanced with regular gas and regular gas is cheaper.

To make a long story short, the Wing was designed for regular gas which burns fast and has a short burn time which means that all the fuel will be burnt in one cycle. Premium gas burns slower and burns longer which means that a lot of heat energy is lost and is wasted out the exhaust valve due to the characteristics of premium gas.

If you have modified your Wing with high compression pistons use premium, but, if you have a stock wing, use regular gasoline to help it run like it was designed to.

Vic
 

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well said.... premium fuel is for engines which need that octane (like my Harley)... having said all that NOT ALL GAS IS EQUAL... and gas changes based on the season ("lighter" in winter-heavier in summer). When lived in Portland Orgon ONLY standard/amoco regular would not ping in my dodge truck and texaco was the worst.

different gas companys do formulate their gas differently.
 

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Thanks Vic, I thought I was doing my 86 SEI a favor even though the Owner's Manual clearly states 86 Octane is sufficient. Someone told me, can't remember who, that I should NEVER use regular but should ALWAYS use premium. Of course, I believed him. Your logic makes sense to me. I have two other fuel injected vehicles a 1990 Chevrolet S-10 pick up (my wife's) and a 1986 Toyota 4 Runner (mine) and both run fine on regular. We use Chevron and Beacon/Velero in all our vehicles. Thanks for clearing this up for me. I'm back to regular fuel. Peter
 

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All the older Wings should run well on regular, they are geared up for unleaded so regular is even better. Only time to consider premium is is the regular in the particular petrol station isn't up to par.
 
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