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Topic | using premium gas when the manual 'recommends' it? |
TheSuperSilver 04/05/24 2:09:08 PM #31: | thisworld posted...
A good rule of thumb is to calculate the fuel requirement using your engine's compression ratio. Higher compression ratio = higher octane needed. Google gave 9.8:1 compression ratio for your car. That's a really high compression ratio for 87. For comparison I once used 87 for a commuter bike with 9.3:1 ratio. But 87 for 9.8:1 ratio? That's pushing it too far imho.True about compression ratio - my car's engine is 11.2:1 so 91 octane makes sense. The manual also talks about using less than 91 octane if it isn't available as a short term solution. It explains what the premature knocking is and that the car may experience that but to stick with 91 whenever possible. So "just use sub 91 octane and deal with the premature knocking and engine/fuel performance" is not a responsible solution long term. --- When it is obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps. - Confucius ... Copied to Clipboard! |
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