I met a dude selling this stuff, I dismissed it as snake oil but have since come across it in many forums and haven't heard a bad word. Kinda like the whole seafoam thing I looked up (we actually can't get that seafoam stuff over in Oz and they wouldn't send me any when I contacted the company...but that's another story).
Anyway, anyone had any experience with XR-1?
'89 Carrera M491, GT30R, TiAL WG, Protomotive FPR, RarlyL8.
'12 Z4 35is
'13 MV F4RR