Diesel,,,, hate the stuff.
Just completed one rocker gasket,(Bank 1-4 ) not quite as easy as i imagined. You have to disconnect injectors wiring box and tie back.
Hard work getting on top of engine to work on it because it is still too high for some jobs even on lowest suspension setting, and i am not a short ass, important note for anyone doing these gaskets, use a gasket sealant to stick the gasket to the cover, even although it is pressed into a groove, it will fall out at the rear because space is limited and the half moon sections will catch on rocker studs,,,, another important thing, buy new rubber washer/grohmets for fixing bolts, they go hard and i can see mine were leaking here also, but i just removed, cleaned and coated with gasket sealant so it should be fine. The rocker gaskets were absolutlely shot, very brittle with lot of cracks in it,,, so i'm glad i have done this,,,
The other side (Bank 5-8) may be even trickier as my lpg vapouriser needs removong along with other stuff. Also, i've got another misfire