I polished with OC and OP then I applied this LSP. Most of everything I have applied seems to roll of at around 45 mph. This on the other hand began to roll off at 35 mph. I know thats not a true test for an LSP but when you`re not running windshield wipers IT HELPS A LOT!!! LOL. Anyway, I am very happy with it and love the way it looks. These pics were right after it rained, I pulled it in the garage cause the seals are almost 40 years old and it leaks water like the Titanic.