Sturds

Might sound crazy but, Mercury Outboard Quicklean Stage 2 it doesn't lower octane like seafoam can and you will gain about 5 MPG while using it and 1-3 afterwards, it is safe for MAF sensors, as modern outboards have all the same sensors as car engines.

LDNN

5-MPG gain sounds too good to be true...but I may be wrong.

mckellyb

I've used bottled Techron in concentrate, i.e. double strength, to clean the carbs, four of them, of a motorcycle which was unintentionally stored for 'bout three years with a full 7.4 gallons of fuel in the tank.

I'm shocked, but it ran just fine after putting a full bottle in the tank, sloshing it around a bit, finally getting it to run long enough to get the old gasoline out of the bowls, then I let it it for a couple of weeks, starting it for a couple of minutes every few days.

jbl-1985

x2. +5mpg is pretty intense for any additive to provide.

code58

There may be a few other good (top notch) injector and fuel system cleaners out there but nothing I've EVER seen that can top Techron Concentrate.

varithms

I work on small engines. I do the same thing with techron or seafoam. It helps, as cheap as trimmers and push mowers are people don't want to pay for a carb job.

Aprazur

X2.... For Redline, Although sometimes hard to find.

lexus114

That`s the good stuff! Just make sure and change your oil after a tank of that .

Francis

I use Chevron Techron from Costco. I use it every 3 months or 4 times a year.