Contour Enthusiasts Group Archives Forums General General Do gas additives really work?

gdub520,
Ya beat me to it.

Penzoil Gumout REGANE, is hard to find because not everyone stocks it.
It is a little on the expensive side,
but it will do what it claims it will do.

Run the fuel tank down, as low as you feel is safe.
Put in a full bottle of REGANE.
Fill up the tank, with the grade of fuel you normally use.
Run this tank of fuel back down, as low as you feel is safe.
Refuel as you normally would.
By the time you get to the next tank, you WILL feel the difference.

This is the ONLY Fuel additive I have ever experienced that DOES what it claims.
It works on carbureted vehicles, just as well as it does on Fuel Injected vehicles.

And you WILL feel the difference.

http://www.pennzoil.com/TechData/pdsheet/gumout/pdf/regane.pdf

Progard is Chevron Techron in a weaker concentration.

I use Amsoil PI concentrate. Does it work, who knows, always used it so don't know if it makes a diff. haven't had a fuel injection issue in over 10 years with any car but would I have had any if I didn't use it, probably not