Quote Originally Posted by 02DC5R View Post
Since most engine wear occurs when the engine is cold (first minutes after starting) I use a 5W oil.
At the moment I'm running Shell Helix Ultra 5W-40. But the 5W-30 would probably be a tad better (costs more too).
Both are within Honda's specs.
I hope you arent giving your car a hard time.

Cos them oils you have mentioned aren't in the K20 specs. Too thin.