Fuel system cleaner
 

Hey i got an alero with 163k miles on it and i was wondering what kind of fuel system cleaner is the best for a car with high mileage

Depends on what you want to clean?

Fuel system? every other change I throw a bottle of fuel injector cleaner into the tank. Many members have used seafoam with positive results.

To clean the actual engine? Seafoam or GM Top End Cleaner seem to be preferred.

If your looking for something you can put in your gas tank, BG products 44k is good if you can find it where you live if not berryman's or chevron.

Seafoam. Love it.

x2

I'll third seafoam..