Quote:
Originally Posted by PolyOlefin
It's funny you said that because I was under the impression most Hondas don't recommend premium. Mine requires it because of 11:1 compression but I think they make an effort for their V6s to run on regular to reduce operating costs.
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Honda has made changes to their V6s in recent years to eliminate the Premium fuel recommendation. Only the high performance fours in the Civic and S2000 still have that recommendation. Ten years ago gas was cheap and smaller V6s were just starting to generate 200+ HP. Higher compression ratios were a simple tool to acheive it. Improved engine design and ECM management have made it unnecessary. My '99 makes 210 HP using premium. The current generation V6 in the Odyssey makes 244 HP on regular!