I don't think it works on American Vehicles, it is reclaimed smoke from LBCs (Little British Cars) It is used a bunch on my other favorite forum.
"The MG Experience"
MGB & GT Forum : MG Experience Forums : The MG Experience
Of course it won't hurt to try.
Just don't let the smoke get in your eye.
04 Horizon QD, 12 Ford Flex, Excalibar, Brake-Pro, ,, Winter Texan, RVin! since 1974
Norm, Donna & Tinker Kat 74 MGB-GT, 75 MGB, 01 Z3
Life is a Timed Event, you only get One Go Around!