Quote:
Originally Posted by Allch Chcar
I have even seen people run regular on "premium only" engines for many years without a problem.
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But on what kinds of cars? Some can deal with it better, especially if they are not highly tuned with pretty high compression ratios or boosted.
A friend of mine who used to work at Enterprise Rent-A-Car said that they never put anything over 87 octane in their cars, but again, it's not as if they have sports cars in their regular inventory. This came up in discussion when he and I rented a Mercedes E350 for a trip. And again, the E350 isn't a slouch, but it doesn't have the most technologically advanced engine on the market.