So what do we think of.....

[bigdave982]

Rust treatments??
The stuff thats supposed to convert rust to a stable base for painting etc

Asking as last years sprayon underseal seams to have washed off☺☺
Admittedly it was the market stuff and as usual you get what you pay for I suppose.
Google reviews of the locite and kurust stuff seem to make it worth trying

Cheers
Dave

[Mirez]

It depends whats rusting I guess? Cosmetic body work like arches/cills or chassis legs and outriggers?

[bigdave982]

Oh yes shouldve said, cosmetic stuff
Only one way to repair outriggers etc ,new metal

[johnnyroper]

Non structural stuff like arches etc it's fine just get a decent one like the gel type. I found the kurust liquid was rubbish it turned the rust black but did not make it a sound material to fill as filler did not adhere to it.

Structural will require cutting and welding unless it's just to prepare minor surface rust.