I am telling you,,,,,,,A/C simple green is awesome.
Especially on exhaust stains....
I tried isopropyl alky, M.E.K. Toluene, etc,,,, & they would not remove the exhaust stains,,,hit it w/ A/C simple green,,,it took it right off.
I forgot to ask where we get it,,I am thinking Aviall,,,but I will find out.
MBHD
