[s-cars] STP Fuel Injector cleaner

[Tony Curran]

Learned bunch...

It is advisable to add injector cleaner to a tank of gas or just leave it to
the gas itself - alsways use 91 octane and sometimes 94.

My gut feel is not to use it. The reason I asked is that I'm cleaning out
the garage and came across two bottles from a pack of three, purchased when
I had a 1990 90 and after I used it the fuel pump in gas tank made a buzzing
noise all the time.

TIA

Tony
96 S6