Any benefits to high octane
Are there any benefit to running octane gas when towing? I had heard when towing use high octane gas.
Forum Discussion
drsteve wrote:
No. Computer controlled engines adjust their spark timing to eliminate preignition under heavy load.
That's only partly true.
Pre-ignition caused by too low an octane rating of the fuel is caused by compression ignition (diesel effect) and has nothing to do with spark timing.
Now....timing advanced too far will cause a knock too and the engine will correct for that. It will TRY to correct for the other condition too but really can't and your performance will nose dive as a result.
