Quote:
Originally Posted by duke36
See the "Microlon" thread. The use of zinc has been debated but found to be beneficial in classic and horiz. opposed cylinder engines. Shell Rotella used to have higher levels of zinc but the levels supposedly have been reduced and possibly due to the adverse effects on modern catalytic convertors. Suggest reading up on adding ethanol stabilizers to the modern fuels, another subject of debate affecting engine performance..
|
Used to - that's the key word. I picked up my engine from my rebuilder, and he wants me to use Rotella 30, so that is what I put in it. I try and tell people all the time that Shell was finally asked to change the formula. You know how persuasive the government can be... In any event if it's so great, why did he give me a bottle of ZDP? I just ordered 2 more bottles of it from Snyders because I am going to soon change the oil again, and then once before laying the car up for winter.