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Just found a bottle of Lucus additive at Advance for $12. It has zink and some other stuff in it "specially formulated for engines using flat tappet cams" It's a break in lube + additive.



Click HERE for thread on Lucas Oil Stabilizer.

Click HERE for a look at bench test with Lucas Oil Stabilizer.

They have two different products. One is an oil stabilizer/smoke reducer similar to 'motor honey'/stp, etc. The other is a zddp additive and motor/cam break-in product. It comes in a 16oz bottle and states that it is not to be used in 1994 or newer cars as it will trash the convertors. I used a bottle to break-in my recent 440 bullet in my sig car and just picked up another for an oil change.