I don’t think I’ve ever heard a success story regarding a coating vs. bonded contaminants.
On the other hand: Even surprising to me, a friend and former co workers Dodge Charger which I had initially clayed, corrected & sealed, then recommended Meguiars D115 for his regular maintenance waterless washing was contaminant free, smooth as glass and passing the baggy test after 3 whole years.
At that 3yr. mark I was set to repeat the process on his car but when I began the claying I was sort of stunned that there was nothing for the claybar to pick up. [white Meguiars claybar]
Is that crazy or what?
He does a waterless wash with Megs D115 about every 3-4 days. Car sits outside 24-7 here in Los Angeles, not far from where I live where the contaminants are extremely high. I can’t even get HD Speed to last even a week here.