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Ok, I must confess, I'm back to the drawing board about this
flat tappet ZDDP oil problem we all face.
I thought the diesel oil like Delo or Shell Rotella still had
ZDDP, but now I read it's been removed from that oil because diesels are getting
cat cons. Also been warned that these oils are very high detergent and
might cause an aneurysm in an old engine.
There are a bunch of additives being hawked, that range from
$10 for two ounces on up. Comp Cams has some, GM supposedly has an
additive, and others.
There's also Motorhead Oil, but who wants to pay shipping on
oil?
Some say the ZDDP is only needed for break-in, others say that
it's needed throughout the life of the engine.
Anyone have a definitive answer?
--Roger van Hoy, Washougal, WA, '55 DeSoto, '58 DeSoto, '56
Plymouth, '66 Plymouth, '41 Dodge
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