Rustoleum primer a bad idea??

[Challenga]

I have been priming areas that I have done body work with rustoleum primer, but I was at the body shop the other day and the guys there said that was a bad idea.  I am not doing large areas, just areas that I have ground off rust or repaired.  For example I ground out my window drip rails and sprayed them with rustoleum before putting 3M seam sealer in them.  Was that not a good idea?  Has anyone ever had any problems with spray pack rustoleum primer before?

[dutch]

I haven`t used rustoleum prducts on my project,  but I would test before getting the car painted if the paint holds up.  I think it will     when it comes to rattlecan primers, its always wise to get it from the shop that will eventually paint the car.
As far as using that primer underneath the seam sealer,  I would use a good 2k epoxy in there... you dont want the area blistering... 

[BIGSHCLUNK]

When I did my interior floor last year I used etching primer on the seams before the seam sealer.. the rest was por15... good or bad time will tell....

[73EStroker]

Use epoxy primer then get a coat of paint over it as primer is not supposed to be exposed to the elements for long. It absorbs moisture. that's why a lot of backyard paint jobs bubble out in a short time - and some "professional" jobs as well. Also - clean or sandblast the metal then cut and/or patch then spray the primer on then add bondo if you have to, then add the final cover coat of primer once you have finish sanded the bondo. This info I have given you is from my body guy who did a beautiful, expensive and longlasting paint job on my Chally.

[Topcat]

Here's a forum and thread that may pertain to what you're doing.

http://autobodystore.com/forum/showthread.php?17212-rustoleum-then-sealer

[Challenga]

The general concensus is not to use the rustoleum.  Thanks guys.  I am glad I asked.

[the_engineers]

To add to this...the instructors at the class I'm taking have us using aerosol primer to help protect freshly worked areas.  When it comes time for the final, we sand everything off and spray with a catalyzed primer.