You haven't described the paint condition.
I will add this link to the May 2018 Thursday Night Open Garage.
The black SC430 was at TNOG about 7 months ago. The owner worked the hood with D166.
In May, Mike asked what process (technique) was used on the hood.
Mike looked the hood over and then did a test spot on the trunk with D166, DMF5 microfiber cutting pads, and six (might have been 8) "very slow arm speed section passes" with the MT300. With that many passes always use your hands to test the paint for heat buildup.
This black paint had definite challenges of swirls and tons of water spots. The paint responded much better to the slower arm movement section passes.
I would recommend trying a polishing pad test spot first. Then go up to the MF cutting pad if needed.
Test till you find out how many section passes it needs.
Take a look at this link to see the test results and overall results.
https://meguiarsonline.com/forums/sh...ht-Open-Garage
I meant in general it is not a long lasting form of protection. From my testing the average durability is about 2 months. Meguiar's states it lasts about 1-3 months in a video from detailing.com. I had higher expectations when it was mentioned that D166 would have a similar longevity to M21. Well I get a consistent 5 month durability of M21.
I got 3 months with white wax so that is why I am saying D166 is not longer lasting.
Don't get me wrong D166 is good stuff. Great correction ability and pretty darn versatile.
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