Guy I work with drives a '03 CRV 120k, says his check engine light has been on a couple days so I tell him to fill up (15.3 gal.) then I put 3 oz. on his tank and walla on his 25 mi. way home the light goes out and hasn't come back on.
Sheer coincidence. For all you know, it could have been the gas cap. Nothing against TCW3 (I use it regularly), but it isn't going to impact emission issues which trigger the check engine light quite often.
Originally Posted By: dblshock
Guy I work with drives a '03 CRV 120k, says his check engine light has been on a couple days so I tell him to fill up (15.3 gal.) then I put 3 oz. on his tank and walla on his 25 mi. way home the light goes out and hasn't come back on.