I was using ik 31 which fouled up due to just moving car up the drive. So im now using 071. Think mine would b better suited to ik27

I always torque plugs to 30 nm as stated in the bible and i do use a little copper grease.

Whats the alternative to copper grease Stu? I know bmw have some kind of grease stuff they use. Using too much will affect resistance to ground .

Paul