I was taught, "If you don't have anything good to say, don't say anything at all. That being said, I LOVE shell rotella, in a diesel, beyond that, not happening. Before you gouge me, understand, I have been slightly educated in the field of lubricants and their purposes. Some only lubricate the bearings in a machine. Some are designed to encapsulate non wanted particals. Some are designed to take extream pressures. All lubricants are designed to serve a purpose. Understand those purposes and you will know if it will serve your purpose. Shell rotella is designed to carry LOTS of contamanits, high cylinder pressures with amounts of blow by, sulfer in the fuel, ect., ect.. I have seen the effects of shell rotella in a gas engine that was pampered, frequent oil changes, driven on the very easy side, NOT GOOD, don't totally understand why?, and gas engines that were flogged, better than other oils would have performed. I'm not beating on rotella, I run it in my diesel truck, just understand, it is made for primarily diesels for a reason!
Les Holt