>>> Didn't we find out that Chevron *won't* be reducing the zinc & phosphorous content in their Delo 400 diesel oil? I guess we'll have to go to that, or the racing oils. I prefer to use the diesel stuff, because it's readily available at O'Reilly's, Autozone, etc. <<< I've mentioned this before, but my wife works for Castrol at their N.American HQ, and I know their heavy duty global technology director. In their Tection (heavy duty diesel) line of products, they are maintaining the current level of zinc/phosphorous (ZDDP) ... there are no plans to reduce it. How that level compares to the other heavy duty lubricants on the market, I don't know ... but I asked him about it, and he said they are maintaining the current levels. Might be another option for you guys running HDD oils. Bob DeMuth. '69 Cutlass S '72 88 conv.
