My 72 Challenger was getting in sad shape in the mid late 80's and I used Vaseline on the top to make it shine.
It looked great for my photo shoot, but made one hell of a mess when it got wet..... LOL
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Come to think of it, think I coated the whole car
This was the day it did it so it would look good in the picture. It need restored so wasn't hurting anything.
By the time I sold it it was rusted too much for me to spend the money to restore, then the E bodies went thru the ROOF after I sold it. Need both rear frame rails, wheel houses, 1/4 on left part on right, trunk floor, drivers side pan rust in firewall, radiator support & a pillar.
The guy I sold it to was going to fix it, never seen it again after I sold it.
Was a factory 340 3 speed manual, had Hemi 4 speed in it when I sold it
I WOULD NOT RECOMMEND VASELINE to treat vinyl top unless it is really bad and you want it to look good one more time