I did not cut the Primer with Mineral Spirits. I opened the Rustoleum can and after mixing, found it to be really thin to begin with. I didn't want it too thinned out by adding MS. Honestly, I think this would be too thin to use as a filler. Perhaps a different primer, thicker style would be better for filler purposes.

I bought three quarts of white primer, ended only used 1 1/4 quarts for 2 complete coats on my truck. I ended up decided on two coats of the primer, and then paint. The first coat of primer went on and showed some original paint. By the second coat of primer, the original paint was not visible.

Depending on what color paint you will use (a bright color like red, yellow or silver) would definately benefit from white primer. I would even consider a white base with something like Grabber Blue, just to make it pop!


I just checked and I didn't take any pictures of just the first coat of primer. Only after the second coat. Here is a before and after picture:





Hope the two of these shows the difference two coats of primer makes!

Keep us posted and take lots of pictures!

John