ericvv wrote:

Pickles wrote:

I try to keep mine in good nick with coatings of WD40, but when applying, the rag with which I apply it seems to end up with a fair bit of black residue on it. Aussie cars have rear exit exhaust.
So, d'ya think the residue would be road grime/exhaust residue etc, or is the WD40 actually removing paint,...which would of course be defeating the exercise?
Pickles..

Pickles, only can tell you that for any Dinitrol overspray, even if old, WD40 liquifies it easily and removes it. Now, I don't think WD40 will do any harm to the paint on the truck body, but the paint on the rear cross member which is a not glossy and more porous affair, I can well imagine that WD40 would remove some of it when using a rag.
Best suggestion is to get your rear cross member properly painted in a satin black paint, and this well before any hints of rust would appear. Satin black looks pretty inconspicuously standard, so most people won't even notice that the rear cross member was painted. My dealer's body shop did that years ago with the SVX without me even asking about it.
Eric