SOHC.co.uk Forums > CB350/400

Unleaded Fuel

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petermigreen:
I've been wondering, will 70's SOHC engines run on unleaded fuel straight out of the box or do you require an engine with hardened valve seats or add lead?

My only experience is with a 2 stroke so no valves ;D and my old car has the hardened seats.

Thanks, Peter

Johnwebley:
should be no problems,

 

royhall:
BP Super Unleaded. Unless you're in the South West it doesn't contain Ethanol. Not until April next year anyway.

petermigreen:
Thanks for the replies. I tend to use Esso super unleaded in my old vehicles as I understand it has the highest octane value.


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tom400f:

--- Quote from: royhall on May 24, 2016, 07:11:37 AM ---BP Super Unleaded. Unless you're in the South West it doesn't contain Ethanol. Not until April next year anyway.

--- End quote ---

Are you talking about BP Ultimate? I use it exclusively. What's happening in April?

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