View attachment 21188I've used most of the Collinite products since I was practically in Diapers.
Here's my take.
Putting a sealant, any sealant, even if it was Opti-Coat under Collinite, is almost like putting Turtle Wax over Wolfgang Fuzion.
It is unnecessary, it is unneeded, there is really no benefit, the Collinite will do its job, and do it admirably all on its own.
Just like you folks don't suggest placing a Sealant over a Carnauba, you most likely won't get a benefit of looks, or longevity placing any Collinite product over a regular Sealant.
Why?
Because virtually any Collinite product made WILL last longer than the sealant you apply it over. IME, just wasting money, time, and hard work.
While I have some higher tech products on my ole 16 year old Tahoe, one reason why I believe it still looks so good today is Collinite.
One week out of the Dealer, it was protected with #476 Super Double Coat. Then it went through 6 salt ridden Chicago Winters, in the snow, sitting in an Amtrak Railroad Yard Parking Lot every day 6 years straight.
Then another 10 years of brutal New Mexican Desert Sun, and Dusts-Winds.
This pic here was right "before" it was treated to the Wolfgang Polishes, and WGDGPS 3.0. Note all the masking tape on the trim, etc.