When all this bad weather is over (when will that be?  ) I am going to service my car, anyway for the spark plugs haynes recommends using a light coating of copper grease on the threads, but reading elsewhere i have seen a post saying copper grease gives false torque readings. What should I do? Fit then dry? Also another question when i change the fuel filter, i guess i will need new type screw hose clips, but what diameter clips do i need anyone know? Thank You