I hear this sermon about all gas being the same every day being a ASE
certified mechanic.
The easiest way I can think of to explain this follows:
We have all push a vehicle with another whether we admit it or not.
If the pushing vehicle stays in contact with the vehicle being pushed
for a longer period of time the pushed vehicle will usually travel
farther on its own. Correct?
The same principle applies to the combustion chamber. If the fuel
burns slower it pushes the piston for a longer period of time and
therefore generating more power. Higher octane actually burns slower.
The ping you hear or pre ignition when you use cheap gas sends harmonic
vibrations throughout the engine causing metal damage.
I personnally burn 93 octane gas in every thing I own right down to
tractors and lawnmowers and have never burned a valve.
This archive was generated by hypermail 2b29 : Sun Dec 03 2000 - 20:29:51 PST