Remove old pin striping?

that looks like a vinyl pinstripe. not a painted one.

the oven cleaner will work. as long as its good paint under the stripe.

I would use some PPG DitZ-0 or DX440 wax&grease remover for the residue and some heat from a hairdryer or heat gun to get the rest of the vinyl off.

there are a bunch of other glue removers out there. but the DX440 i have found to work the best. any autopaint shop should have it in different sized bottles.