Simca fuel...
Moderator: RichardW
Simca fuel...
Is it OK to just use Super Unleaded with a 1973 Simca 1100 as this has the same 97 octane level as original leaded fuel or is it advisable to use an additive?
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I would stick to the same brand of LRP or use regular unleaded and a quality additive. If you change additive brand, make sure you use all the fuel in the tank first, as different types use different chemicals which might react with each other.
Castrol Valve Master Plus is ideal as it has an octane booster so you shouldn't have to retard the timing. I sure this was the one I used in my Morris 1000 with no problems.
Castrol Valve Master Plus is ideal as it has an octane booster so you shouldn't have to retard the timing. I sure this was the one I used in my Morris 1000 with no problems.
This may help. If its got an alloy head it will have valve inserts and as you will see from the article these will probably outlive the car on unleaded although there will be some wear.
http://www.pumaracing.co.uk/unlead01.htm
jeremy
http://www.pumaracing.co.uk/unlead01.htm
jeremy