Prime & Paint underside questions

my mindset is to clean my metal and apply whatever it takes to keep it good another 40-50 years. the show car-mirror crowd has one mindset and the driver type guy another, and all thats great!!! I have used just oil based equipment enamel on floors, under car, etc with really good results. I have no rotisserie, just my flat back!

clean metal as good as possible. I like to treat bare metal with Ospho, but be careful . let it dry thorouly, and test whatever you put there, I have seen some things wrinkle, but still stuck like glue. I like epoxy or a cheap route on floors, oil bas equip enamel ( would be a lot like Rusteolum??????)

I suggest just be careful using a product like Rusteolum and them coming back over it with an auto type product. just as mixing auto paint brands can sometimes bit you on the a--.

years back, and still available is a undercoating type product called "body Schultz", IMO a great product.

I just wish I could get off my butt and build a rotisserie! LOL