oil pressure and different weight oils

15-40 Rotella T (triple protection) has 1200 ppm of zinc.
As far as I know and have read, none of the other Rotella's do.

Ok. The article I read talked about Rotella but I don't think it said Rotella T. That's the bad thing about articles. Just when you think you found a good one you find out they leave out stuff. We have a new guy coming to church that works for Schaffer oil. Talked to him a little tonight and plan on talking more when we can get together. Looking forward to hearing what he has to say about oils.