In several weeks I'm going to do a ton of mechanical work to the '90 240 and when that is done I'm going to detail the outside. Has anyone tried either of these two products that IPD advertises for making the formerly black trim and bumpers a dark black color again?

Thanks for your help.
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If it needs to be maintained, repaired or replaced on a 1990 240, I've probably done it. '90 240DL, 245K looking forward to 300K badge. >>You haven't really worked on a car until you draw blood<< :-}