Stevebfl though highly of it for some situations - MotorVac?
. The search for Motorvac turned up the threads on x66p and related compounds (looong discussions).
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E