So this weekend I dove into my oil pan gasket replacment on my 94 318i German road oiler. I'm glad I make a living at working on airplanes and not cars...
I have always run M1 0w-40 synthetic oil in it. With 175k I wanted to switch to a 20w50 synthetic due to some possible valve guide ware. The search basically ended up with nothing except royal purple at $10 per qt. No thanks. So lots of guys run Shell T6 rotella synthetic with the pre y2k ZDDP zinc content. All of the old oils had much more additives in them than they do now. Prior to 2000 regulation has cut the ZDDP in half. This got me thinking...
Does anyone know the ZDDP content in our aircraft engine oils? I'm wondering if this is the simple reason our tappets are turning engines into scrap metal.
Probably should have used the search function.
-Matt