I have an engine which has not been converted for unleaded fuel. I have been using Carplan/Tetrosyl lead replacement additive. This was a manganese based product, which they now no longer manufacture, Carplan do another additive which is potassium based. I have read on a Historic Vehicle site that you should be consistent in the additive that is used; presumably this means the base element, rather than the manufacturer. Does anyone have any knowledge on this matter?
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I use Tetraboost which is the real deal, tetraethyl lead thus giving you real leaded fuel. Take a look here www.tetraboost.co.uk
Otherwise, yes, stick to the same base product, although a one-off change should do no damage, just don't chop and change.
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