you mean recommend it? There are cars that run on 87 fine but the manual recommends (doesn't say require) 91+ which will make a good difference.I imagine this question will continue to come up with gas prices rising so I'm going to go ahead and add this to the NMH FAQ.
The only possible "myth" out there, is when people think there is some super advantage to putting higher octane fuel in an engine that does not require it.
A lot of cars are capable of running on many octanes of fuel. They have different ignition and fuel maps depending on which octane is being run. The car will try to run the aggressive map and if knock is detected then it will run a less aggressive map.you mean recommend it? There are cars that run on 87 fine but the manual recommends (doesn't say require) 91+ which will make a good difference.
This statement is true in a sense. Commercial Jet engines use a fuel called Jet-A (or AVTUR). It is an Unleaded/paraffin (kerosene) hybrid fuel that is very similar in chemical structure to Diesel fuel.Jet engines burn kerosene, by the way.