I'll keep notes, for a few tanks full. The truck has 173k
miles on it, so it may well be due for fuel injector
cleaning. And a few other PM repairs.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"SMS" wrote in message
...

Most likely it did nothing if it's a fairly new vehicle.
You'd have to
check the mpg a lot more than once.

It's basically toluene, acetone, hexanes, and methanol, same
as most
fuel system cleaners. The actual ingredients would cause
your mpg to go
down, but if something was gunked up it might have helped.