I am doing this right now because the old paint is peeling and faded. I want to do it properly so I don't have to do it again.
My first question is should I remove all the old paint before repainting?
The roof rack cross bars have 3 parts- 1. a black plastic side that slides into the rails 2. the painted aluminum cross bar and 3. A vibration absorbing rubber insert that is on the top of the aluminum cross bar
I know not to paint the rubber part, but should I spray paint the plastic side as well, or just the painted aluminum cross bar that has the peeling paint?
Should I use a separate self etching primer for the aluminum part, or will using a blended paint + primer rattle can be fine?
My last question is whether its a good idea to use a clear coat? I live in California where this paint will be exposed to high temp.