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Edd · 06-30-2007, 06:03 AM

Using higher octane than recommended will NOT make the engine knock*. It will make it less likely to knock. Higher octane = more stable and less likely to prematurely combust.
Members in this thread are correct in saying that you will most likely have no benefit from increasing the octane rating on the fuel (unless your car knocks at the recommended amount).
The top fuels (98 RON) are there to replace leaded petrol. Back in the day, lead was THE way to boost octane. Now we can achieve higher octane ratings without it, there is no need to burn lead in old cars.

*Heh, I just read the last couple of pages and I don't think anyone said it would. Nevermind then.

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06-30-2007, 06:03 AM	#30
Edd Drives: None Join Date: Mar 2007 Location: Australia Posts: 193	Using higher octane than recommended will NOT make the engine knock. It will make it less likely to knock. Higher octane = more stable and less likely to prematurely combust. Members in this thread are correct in saying that you will most likely have no benefit from increasing the octane rating on the fuel (unless your car knocks at the recommended amount). The top fuels (98 RON) are there to replace leaded petrol. Back in the day, lead was THE way to boost octane. Now we can achieve higher octane ratings without it, there is no need to burn lead in old cars. Heh, I just read the last couple of pages and I don't think anyone said it would. Nevermind then.