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Reply to "Camshaft failure"

Here's what I was told by some vendors when I called about the Zinc and Phosphorus levels in some oils back in 2009

Rotella T 15W40 - 1210ppm Zinc and 1110ppm Phosphorus (this is in the New Rotella T Triple Protection (CJ-4 blend oil)
Valvoline VR1 20W50 - 1400ppm Zinc and 1300ppm Phosphorus
Valvoline VR1 Straight 30 - 1400ppm Zinc and 1300ppm Phosphorus (same as the multi-viscosity in this regard)

Note: Rotella is a diesel oil, and because of the detergents I chose to pass on it and go with the VR1, but other oils with high Zinc and Phosphorus come from a number of manufacturers and have loyal fans (e.g. Brad Penn, Royal Purple, Amsoil etc.). A quick internet search on oils with high ZDDP should give you a list of recommendations and a couple of calls to manufacturers should get you the data points to make a choice that works for you in terms of local availability, viscosity, price and even the colour of the oil when you pour it in :-)
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