Originally Posted by 02Zetechse
I have to disagree with Norcal on using grey primer to go from black to red .Although your results will prolly be unnoticeably different I would use the Red Oxide Primer. Its a red/brown primer . Either way its done will work perfectly fine. The red paint may cover better on the Red Oxide Primer.
The reason you want to use a differant color primer, is so when paint the finish coat on, if you cant see the primer, you know youve put enough paint on.
Hi end auto painters used to use red oxide primer, under yellow, blue, black. Just so they knew they had put an even full coat on the car.