I mentioned in another thread that I took my E36 to get rustproofed, and completely forgot to mention it here!
So, last summer, I took the car to Krown Rustproofing (https://www.krown.co.uk/) in Tipton, Birmingham. It's only been a few months since, so I'm not endorsing them yet, but the franchise is run by one friendly Latvian man, Robert, and he was perfectly content with my hanging around the work bay while he did his thing. Essentially, he gave the bodywork a rough clean first with compressed air and brushes (perhaps it would've been nice to see it get a more thorough clean), and then went into every nook and cranny he could possibly get his spray nozze into, and coated the bodywork with the Krown stuff inside out.
I had initially heard of them via an RX-8 forum in the UK, and they seem to be pretty well regarded in Canada too.
I found a few bubbly patches undernear the taillights. I'll have to just sand those down and respray those bits once my dad and I get around to painting the front grille frame.
The treatment cost £272, which seems pretty reasonable to me. I had toyed with the idea of going for a full CO2 blast and stuff, but that sorta work would cost £2-3k. Hopefully this holds up!




