Today's paint compatibilities are much better than back in the days of Lacquer & stuff, but I too stay away from "other" brands when doing a known job.

About the Bondo on the vehicle.

I ALWAY'S put my bondo on the metal only, but only because I'm "special" like that...

Bondo is like a really kickass glue, if you scratch the paint and bondo it the bondo will stay until the paint comes off.

The surface you want to apply bondo to is just better if it's consistantly paint free. That way the "hold" the bondo has is identical across the job, therefore more reliable overall.

Rust CANNOT build up under Bondo unledd there is a hole that oxygen and moisture can get into.

No holes ='s NO Rust EVER. It simply cannot happen. So, bondo what you want as long as the elements are NOT able to get to it. It's EXACTLY the same reason we paint cars, it keeps the elements from getting to the METAL, which is the foundation and the reason behind our cars being what they are.


FE

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