Oil smells of veg fumes, time to change?

[cwspellowe]

Good oil will help prevent bore wash, but also bearings, rings, cam followers, basically most moving parts, but don't forget that oil is really the only significant cooling our turbos have...

This, plus degrading oil from hot spots in cylinders, cheap stuff gets too thin and can lead to excessive wear too.

After spunking £300 on a turbo I certainly wouldn't lubricate it with Asda's finest..