My cars manual calls for high octane fuel, most cars do today, is it really necessary? Will it make a diff?

Answer 1

If the manufacturer recommends premium gas, then the car's engine performs the best with premium gas. If you use a lower grade, the computer will adjust the detonation, so that the engine isn't negatively affected, but you will get somewhat worse performance and fuel economy than you would have with the recommended premium fuel. If the manual says that premium is required, go with the premium gas. If it says premium is recommended, you can try regular. The manual will say 87 octane is the minimum requirement, if this is the case. The manual for my new Volvo says that the engine was designed to use 91 octane or above for "optimum performance," but 87 octane is the minimum requirement.

Most cars do not require or recommend premium cars - only higher end and high-tech engines do so.

Answer 2

You must have been one of those people that bought a sports car to make you look cool. I have a new car and it don't require high octane fuel.

You can try regular grade fuel and if the engine starts pinging, you can go to the auto parts store and buy a bottle of octane booster, which with gas prices the way they are its actually cheaper to do so.

Answer 3

if the car calls for it, you should use it. higher compression engines need the higher octane fuel. that being said...you may use the lowest octane level taht does not cause your engine to "ping". if it pings...go up to the next level..if not..save the money