What Is The Highest Compression Ratio For 87 Octane?
What Is The Highest Compression Ratio For 87 Octane? Generally, engines with compression ratios of 9.3 : 1 or less will safely operate with unleaded 87 octane fuel. Engines with higher compression ratios usually require higher octane fuels. Many owners who operate vehicles designed to operate on 87 octane fuel experience ping and knock. What