187132
RAINEY
With all the bloviating about oil and additives, I am amazed that no one has mentioned BG 44K fuel system cleaner, since the original question concerned BG products in general. Best darned injector cleaner I ever used in 25 years wrenching cars. I'll bet it works great on Motronic EFI but I haven't needed it yet.
The 44K is an excellent product and works as described. It doesn't try to be something it's not.