Is it true that you HAVE to put the highest grade gasoline in certain cars or you will cause them damage?

Question

Or is it just better to put the best gas in your car for performance reasons?

Answer 1

I would suggest using what the manufacturer recommends. If you don't want to put in the right gas, then don't buy the high performance engine. The lower octane gas will most likely not do any damage in the short term but as you said performance will degrade and the cars computer will have to cut the timing back to prevent detonation in the cylinders. good luck.

Answer 2

I have heard from many people that regular gas is just as good for cars. My husband used plus gas in his car because the engine was running rough. Then, after he had a full tune up, he switched back to regular and the car runs fine.

Answer 3

you should use the backside grade gasoline in case you experience like it. it ought to even improve your engine's overall performance. at the instant, all gasoline interior the U.S. has an identical detergents so employing a decrease grade gasoline won't make your engine grimy or something. verify to work out what your compression ratio is on your engine. if the 1st variety in that ratio is a ten or bigger, this is extra effectual to apply 89+ and the better grade will make your engine run extra effectual. if the ratio is under 10, the decrease grade might very nicely help your engine because it is going to likely be extra handy to burn for the engine. employing severe grade gasoline on a automobile designed for low grade will reason a destructive to impartial result. employing low grade gasoline on a automobile that demands top classification will reason the engine to knock, which slows down overall performance and ought to reason harm to the engine. verify your instruction manual to work out what you want, or basically verify out your compression ratio.

Answer 4

Techinically no. cars are designed to run on a specific type of fuel. Octane ratings are there to just tell you what type you are putting in. This will not do any damage to your car, but it wil not do anything to improve performance and fuel consumption as well. just follow what the manufacturer recommends and you will be happy:)

Answer 5

you can actually do damage over time if the engine requires a minimim octaine rating if the engine runs on reg and you run the spendy stuff your just wasteing money and probably getting worse gas milage i could go into cooler/longer burn to faster/hotter burn but it would take to long just go with the owners manuel youll be ok (how many people actualy read those things???)