Re WD-40. I read that the "WD" stood for "water displacing" too :think: No, that wasn't on Wiki :grinno: but rather, IIRC, on product literature back in the day when it first hit the market.
I'm no fan of WD-40, don't use it on anything automotive, haven't used it on *anything at all* in years. But I did treat an old rust-prone, bare-steel machinist's ruler (four-foot long thing) with the stuff and then left it lying on a concrete floor for over a decade (yeah, yeah, very negligent of me

). Said floor got wet/etc. and was about the worst place imaginable for that ruler to be...but zero rust resulted, the WD-40 protected it just fine. Yeah, I know, that's hardly a controlled test, but still....
connorb850 said:
Accumulator - So it's okay to lightly polish the matte/textured areas? The paint on the door jambs seems smooth and glossy like the exterior of the car, but this is not the case with the trunk jambs and paint in the engine compartment. These areas have a fairly rough textured look and feel.
Just don't overdo it. I used the PC/4" on some areas like that on the MPV and cut through to primer on some high points/edges in *one* pass

Doing it by hand worked OK though. That MPV is one awfully cheap vehicle, so you might have more paint than that.
Don't try to eliminate that texture, just take the "edge" off of it, reducing the texture just enough that buffing the AIO off isn't as big a PIA oughta be sufficient (when it's got that "edgy texture" the AIO can be a little more of a PIA than usual as it wants to remain in the low areas of the texture).