No, no, no! 303 is crap -- you need
304! Just kidding
I guess I'm going to have to get a bottle of it to try myself. I used to really like NuVinyl for all my interior trim since it dries and doesn't attract dust. I used my last bit on my rubber floor mats (REALLY liked using it on the mats since it made them nice and black, and wasn't slippery) and now I can't find it anywhere
For my dash and door panels I've been using (dare I say it?) Zaino Z-9 "Leather Soft" spray cleaner and Z-10 "Leather in a Bottle" treatment and conditioner. As much as I love Zaino, and as good as the Zaino leather products work on the leather seats, I've been a bit disappointed with it on the vinyl bits (I do think it would work good on the Leatherette seats though). I used Z-16 "Perfect Tire Gloss" on the rubber mats last time too, and it was still a bit too slippery after it dried. I miss my old buddy NuVinyl
Maybe next time I'm down at the beach, I'll stop by a boat shop and see if they carry 303. I need to get some synthetic grease for my grease gun anyway...