Hi there,
While there are many additives that do many different things, the questions is what type of additive are you looking at.
Stabilizers only prevent fuel from breaking down, evaporating and causing harsh white deposits left over afterwards.
While any injector cleaners can be used, chemical composition differs substantially from one to another.
Fact of the matter is, fuel formulations are so horrible, that many drivability concerns arise from simply the gas, not actual deposits.
12345515 is what I have found to reduce and eliminate in 95% of all cases, deposits and fouling that causes rough idle, stumbling and the like. After using BG44K, which is an excellent carbon reducing formula, it doesnt always clean injectors completely.
Recently, there was a TSB issued on cleaning injectors from GM, and a specific formulation of fuel and 1050002, is added to a pressurized canister, and then the car is run to completion.
This will clean out all other deposits not addressed by the tank additive.
Tolene is a very high strength solvent, and is NEVER to be used. Although some say it will not cause problems, we have seen shorted injector windings, at higher temperatures.
Basically, when at ambient temperatures, the injector will test ok. However, once the engine gets to operating temperature, the higher resistance is outside of GM specification, thus creating incorrect spray patterns.
Normally, 12345515 every six months will serve you well, and prevent any problems.
Allthebest, c4c5
