Posted: Nov 29 2006 at 1:33pm | IP Logged
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Jgibbyson;
Welcome to the group!
First closely read the owners manual.
... According to tests preformed by Consumers Report most vehicles that ‘require’ ‘high test’ gasoline will run fine on 87 and even less at very high altitudes. I have run 85 octane between 8,000 and 14,000 feet in my ‘99 3.3 Frontier that ‘requires’ 87 octane.
… As long as the spark sensor or similar device is retarding the timing when pre-ignition knock is present (like under a lot of power) the 87 should do a good job. The higher octane fuel will enhance the performance and mileage on those engines that require it but it will probably not be cost effective.
… Now that the government has seen fit to dilute our sorry unleaded fuel with much less power performing corn juice all bets are off. Even a mere 10% amount of corn juice is cutting power, fuel mileage and shortening the life span of the parts in the systems it comes into contact with. This is, of course, unless you have and E-85 equipped vehicle.
I have studied this subject and this is my humble opinion.
Have a good one, and CUL.. Don S..
__________________ PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
Fort Worth
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