Quote:
Originally Posted by NoHandleBars
You put regular in it..? That's something I never plan to do. Performance loss is very obvious when you drop down in grade.
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....and I really have not seen an appreciable difference in MPG or performance.
I believe that theortically the performance is affected; but I am sure that it is not significant.
Furthermore, I hear no pinging or knocking while the engine is operating or pulling. There is also no dieseling after the engine is shut down.
I am satisfied that until I see this type of evidence, there is no need to run the more expensive fuel........gm