As posted in a few other threads, have a April 68 GT/CS I am taking apart for a repaint. The more I clean and prep, the less I want to do... it has had the front bumper and arms (72 ink stamped service replacements, interesting stamps , will post pics once I get them) replaced, I think the left front fender (ford service replacement based on the red oxide primer, and the driver door (sourced a clean original that will go on).
In looking at the underside it is coming up very nice. Road grime only, no rust. original red oxide, runs, pimples and all, coming to light again. Original rear end, engine (VIN stamped) and trans (hoping to find a VIN stamp). Original metal for engine bay (no battery tray rot!), radiator support/crossmember, rails, floors and the door jambs back. So am going to keep the repaint to the white only, and redo the engine bay black. Pullthe engine and detail, no rebuild as it runs fine. No nuts-and-bolts strip as it looks like the underside will clean up very well.
In cleaning the underside there is white overspray, which makes sense as it is a Wimbledon White car. But it has had a second paint job (more on some of those curiosities in a separate post). Basic tape-and-squirt. In cleaning the underside with a degreaser/cleaner product that will not damage paint got the grime gone and down to overspray/primer. In hitting a few tough spots of grime around the transmission in the tunnel used a more aggressive spray can degreaser, in wiping down the areas noticed a lot of the white speckle was coming off...
So, the question, is it likely that the overspray coming off with only a mild wipe/buff with a rag and degreaser is the second paint job, as its over road grime (parts date the front end repairs to the early/mid 70's), or would the degreaser take off factory overspray? I am thinking the factory would be harder to get off, but am not sure...