There are many fuel additives like STP and or some very expensive ones on the market to add to your gas tank to help clean the tank and engine and so called help the engine run better. Do they really work or is this a waste of money and also if they do work what is the best one to buy?

Fuel additives to clean gas engine?

edb1961 March 9, 2011, 3:21pm 5

I add a bottle of Chevron Techron or Seafoam to my cars about once a year as preventive maintenance. I’ve noticed an improvement in idle quality on my older vehicles, a 2000 Blazer and a 93 Caprice.

Ed B.