I picked up this 2006 H2 right around new years and I haven’t done any undercoating yet cause I wanted the salt to be washed off the roads first so can properly clean the frame before undercoating. I have now pressure washed the inside of the frame rails and I regularly under carriage washed it for the last 6 months. These are the worst sections on the frame the body is otherwise clean.

This vehicle has spent its entire life in the rust belt starting in NJ then to PA and it’s been in Ontario since 2009. It has been winter stored since 2013 which left it in decent shape for its age in the rust belt. I’m now trying to decide where to go from here.

1. Should I wire brush the rougher sections of the frame then hit them with rust converter and undercarriage paint? Im scared of trapping the rust by doing this
2. Should I just undercoat on top of existing.
3. Also what undercoatings do you recommend? I’m leaning towards lanolin wool wax black as I’ve had bad experience with just crown oil spray in the past

I’ve never owned something 20 years old before so all input and opinions are greatly appreciated. Thank you!

 

First remove the loose rust! A

needle scaler

needle scaler

removes it quick for me!

BTW, most undercoatings allows moisture intrusion.

Here's my go to:

 

Use rust bullet metal blast, then rust bullet paint, then start getting it crown oiled or some kind of oil coating every year