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Lead Substitute - how effective? ALL

posted by  someone claiming to be Trevor G. on  Sat Nov 21 07:16 CST 1998 [RELATED]

Since unleaded gas is taking over the world, various after-market lead substitute additives have become available to fight the dreaded exhaust valve seat recession in older engines which do not have hardened exhaust valve seats. I know the real solution is to have hardened seats installed, but I would like to read some comments from people who have used these additives as to what brand seems to be the best and how effective they seem to be. TIA.





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New Lead Substitute - how effective? [ALL]
posted by  someone claiming to be Trevor G.  on Sat Nov 21 07:16 CST 1998 >


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