Brad
Back on the list again.
This was discussed several times. The synopsis:
1. Modern off the shelf oil have reduced ZDDP because it destroys
the catalyst coverter This also causes excessive wear and
early failure of the camshafts and lifters. Starting a newly
rebuilt engine without the ZDDP will cause problems.
2. This may also apply to Mobol 1 and other synthetics
3. Shell Rotella oil used with diesels has the necessary ZDDP
but Shell is reducing the amount.
4. GM sells an additive that contains the ZDDP for their older
performance engines. I've seen it at Walmart.
My advice
1. Use Mobol 1 with the GM ZDDP additive
2. Use ShellRotella
In a message dated 8/9/2009 8:29:47 A.M. Eastern Daylight Time,
huffb@southslope.net writes:
What brand and type of oil are you guys with solid lifter cams using? I've
heard that there are issues with today's off the shelf brands.-Brad
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