Jim Grant's Tech Tips
Can Fuel Additive Kill a Fuel System?
Q: I added some STP "Jet Fuel" fuel additive. A few days later, my fuel pump goes out. Is this a problem with the additive or a coincidence?
A: Why did you add the fuel treatment? Did you feel that your vehicle wasnt running right? I often find that customers, who normally do not use fuel additives, will suddenly change their habits when their vehicle doesnt seem to be running right. More often than not, this is a reaction to a problem that is surfacing with a vehicle, but has not fully manifested itself. Fuel additives such as STPs Jet Fuel as with other such additives are meant to be used as maintenance products. These additives are not meant to repair a part that is failing. Their job is to help clean and maintain engine performance. There is no doubt in my mind that your vehicles fuel pump was failing. It is just a coincidence and nothing more.