Re: [FWDLK] oil ZDDP

I did a little research on this subject a while back when I first heard about it. The best article I found on the issue is here:

http://www.dctra.org/?p=79

It also has suggested oils that still have enough ZDDP.

This is all caused by our friends the Environmentalists. They think oil containing ZDDP will sneak into the combustion chamber and affect the catalytic converter. The same oils and converters we have been using together for over 30 years that have worked just fine. I think it is a plot to finally get all old cars off the road by killing them with non-ZDDP oils. Has the EPA or the oil companies provided warnings to the Public that this new oil will destroy their engines?? What they don’t think about is how much pollution can be caused by engines running poorly after the cam is ruined, and how much pollution is caused by manufacturing a new replacement car.

Dave Homstad

56 Dodge D500

-----Original Message-----
From: Forward Look Mopar Discussion List [mailto:L-FORWARDLOOK@xxxxxxxxxxxxx]On Behalf Of Jan & Roger van Hoy
Sent: Tuesday, May 20, 2008 10:28 AM
To: L-FORWARDLOOK@xxxxxxxxxxxxx
Subject: [FWDLK] oil

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