Epoxy Primer, For internal areas and other questions Options

[bbrock]

I needed to get some epoxy primer for sealing internal parts like the insides of suspension consoles, tunnels, etc. Eventually, I'll be spraying the car with PPG Deltron so the local paint supplier steered me to DP50LF (gray) primer and I picked up a gallon. But this stuff is really expensive (>$300 for paint and activator) so I'm wondering if there is a cheaper option that will provide as good of corrosion protection for internal parts that won't get a top coat other than cavity wax. But I don't want to sacrifice protection, so am happy to use this stuff if it is the best for this purpose. I used Eastwood's rattle can epoxy primer inside my passenger long and it worked well. But once activated, you only have 72 hours to use the whole can. I need something that can be mixed in small amounts for when I only need a little paint.

Also, I bought gray primer because I'll be spraying silver metallic. But I'll be spraying surfacer over the primer. Is there an advantage to exchanging this paint for DP40LF (gray green) to provide a little contrast for when I spray surfacer?

Finally, how much primer should I expect to use for 2 coats on a full bare metal rotisserie job inside and out?

[Wdunster]

Sorry I'm late to the party. PPG epoxy primer is absolute one of the best products to use. I started my career in Body as a restoration tech. We used this on all bare metal. I currently work in the industry and would not recommend going the cheap route. If what you use on the steel doesn't stick or prevent rust you will regret it. To do paint correctly for a long life finish you will be better off going with quality products.
I still do paint work at home. Recently painted some stainless steel parts and sprayed epoxy primer and top coated with base & clear. Stuff absolutely takes a beating.
Just my two cents.
Bill