Took me a while but I found the perfect solution to removing diesel exhaust soot from my starboard side (330 Express).
Soft Scrub + a soft brush. Works great...
Soft Scrub + a soft brush. Works great...
I know that Roll Off works well from personal experience - but if the soot is on there for too long then you have to get more aggressive. Just remember that the Soft Scrub is taking the wax off... which makes the soot "stick" better from then on out... again requiring the harsher product.I tried "Roll Off" and I was unimpressed (price and performance wise). I wax every 6 months so I have a good coat on it at all times. Soft Scrub, lots of water and a couple swipes with my soft brush takes the soot off quick. Takes just a few minutes...
Lastly - For What It's Worth - I have used Collinite 885 for years. It is very very good but I'm now loving a sealant , not a wax. I use Jescar Power Lock Plus Sealant (no affiliation). The Jescar is 2X easier to apply and lasts 2X longer (because it is a polymer, not an organic product). Just sharing notes on this - again - no affiliation!