So due to some difficulties on the road a long while back I bought some modern Castrol Gtx and put it in the 5...
Forgot about it for a couple of years and and got a few wry looks regards the lack of Zinc and stuff.
Well just putting some Castrol Classic in now but as I started I thought I would do some research.
Take a look here a very nicely done table of research and it seems to be saying that Zinc and stuff is no big deal after all.
Modern Castrol GTx 20/50 comes out really well.........
Maybe we should stop worrying about zinc and start looking at the research.
The guy actually states that the Zinc thing is a popular myth.....
Edited by Rem18, 19 April 2018 - 08:42 AM.