painters!!! rubbing alcohol as prep cleaner??

Yes MEK is the lightest solvent and will dissolve nearly any kind of paint. I didn't bring this solvent up because it should only be used on bare metal and it can be absorbed through your skin.
Not good for you at all. One of the worst infact.
I use it when painting plastic. It will melt the wiped surface and the new paint will weld itself to the softened plastic which is great for things like steering wheel grips arm rest & dash pads.
Flexible soft trim items that have a tough time hanging on to paint because they are flexible and
get a lot of wear.
I would consider this solvent much to strong for wiping primer before paint unless done very carefully. very dry towel and very fast or it can easily dissolve your primer.
Nothing worse than being able to see your wipe down footprints in the new paint.