alright ive looked all through my shop manual and I cannot find the answer to this. On my c4 I pulled the dipstick tube out so that it wasnt in the way when i dropped in the motor and tranny. When I pulled it out there looked to be red RTV smeared all around it to seal it. Should it be RTV'd? I thought theres a rubber o-ring that goes around the bottom of the tube. I know this is a dumb question, but maybe i overlooked it in the shop manual but I didnt see a break down of a c4 where it showed the dipstick and the dipstick tube.