I was trying to find this video for the chap but kept getting distracted.Just FYI, the waterless wash with McKees and a soft detail brush didn't really cut the mustard. It struggled to shift some of the really dried on bugs, I would definitely try a citrus all purpose cleaner.
Dealing with severe BUG SPLATTER the easy way
Bouncers CI washhttps://tinyurl.com/m7ee2avdVarious Detailing Brusheshttps://tinyurl.com/bdhahdm8youtu.be