So my car has had dullness for the past few years. I'm in a desert climate with extreme heat. So usually after washing my car I use a DA polisher and a rubbing compound and a wax after which brings the shine back a little, but the shine will only last maybe a day before it looks hazy again. So the other day after washing my car I decided to experiment with some silicone oil I purchased which I used to fill my fan clutch. I put a small amount on a cloth and rubbed it on the right fender, it was really thick so after it spread a little it was easier. Long story short, it took about 10ml to do my entire car (50ml bottle for $8) and my car now looks like it was just repainted and it's been 2 days. I read online about this and I can't find anyone that has used pure silicone oil on their car. I did read that it attracts dust, repels, water, etc, etc. My car is black and after the first day after doing 60 miles of city driving the car was still just as shiny as ever. When I got home I took a dry cloth and wiped the hood and there was dust, but there would be dust whether I used silicone or not. But I wiped the entire car and it's just like it was the first day I put the silicone on. I did not put this on any of the rubber, or my tires, or my interior. I was already contemplating a paint job, so if the silicone would've messed anything up I wouldn't care because I would've got it repainted anyways. However, I did not want to experiment with my interior or run the risk of messing up and rubber. But I am thoroughly satisfied with this and I would highly recommend it for anyone that may possibly be in the market for a respray. Not sure how it would look with a light car, but for black it looks amazing.

Sorry, pictures don't look so great, but the car literally looks freshly painted in person.

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1990 190E 3.0L