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Gas Type

Started by 2022, August 09, 2022, 12:06:07 PM

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2022

I have a high compression engine. in my B roadster. It seems my engine is a high compression engine and, in reading the owners manual, it mentions at least 98 octane and wants 100 octane. 

For those of you with a high compression engine, are you doing this or is premium okay?  Are you adding an octane booster?

Stephen Naylor


amgba

I never saw a "B" manual that said 98 or 100 octane gas needed. Neither is commonly available at pumps in the US (or the UK). 89 is the best choice at the relatively low compression these so called "high compression" engines  have, but 91 won't hurt.

Some, but not many stations have 93 octane instead of 91. This usually not needed unless the compression has been modified .

Mark Huff
American MGB Association
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