better fuel, better performance?
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better fuel, better performance?
I have a 1998 Explorer XLT and I was wondering if I can get better performance out of it if I switched to a higher octane than what they specify (87). What is the best gas for it and do i get better mileage out of it?
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From: UT
Unless you do something (Chip or other modification) to take advantage the higher octane, it won't help any. Some say it can actually hurt your engine by contributing to carbon build-up. The octane number of gasoline isn't a measure of energy. Rather, it's a measure of how the fuel resists burning (higher number burns less easily). Some high performance engines will call for higher octane because the engineers have adjusted the compression timing and other parameters to use the higher octane fuel. In the case of the Explorer, the engineers designed the engine to run off of 87 octane.
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From: Colombia ,South America
my 50 cents!! 
Octane depends if you are at sea level or over it!
each 100 ft over sea level, octane loose 1 grade , thats why at high altitude cities you can use regular fuel in high compresion engines!
In my 99 Sport manual says fuel must be at least 91?
Maybe the difference is because we are in south america, but 91 octanes here must be the same at any place in the world
Octane depends if you are at sea level or over it!
each 100 ft over sea level, octane loose 1 grade , thats why at high altitude cities you can use regular fuel in high compresion engines!
In my 99 Sport manual says fuel must be at least 91?
Maybe the difference is because we are in south america, but 91 octanes here must be the same at any place in the world
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