Hi, i used to use Gumout庐 Concentrated Fuel Injector Cleaner once every 3000 miles, and i used to add it to a nearly empty tank , then full the tank up with gas. Now i am changing to STP super concentrated fuel injector cleaner(for no reason other than i cannot find gumout in any nearby store) . stp mentions on the back of the bottle to use it in an at least half full tank. now my question: i just add it to the half full tank and drive or i add it to the half full, and then i fill it up with gas and then drive?
why gumout and stp differ in how to add the injector cleaner knowing that both are concenrtrated?
i also read various comments on how to use it (tank half full, add bottle, then refill - or - tank empty, add bottle, the refill. - or - tank half full, add bottle.)
any help is appreciated
thanksSTP super concentrated fuel injector cleaner?
I think it is just the way the instructions are written. In any case the tank should be at least half full when you are done adding cleaner or gasoline.
In the days of carburetors the gas in the tank mixed rather haphazardly as the gas sloshed, but fuel injector systems return a steady stream of gas from the regulator to the tank. Older instructions used the addition of gasoline to mix the cleaner in while new instructions don't care.
My approach (as of a couple years ago) is to stop using fuel injector cleaners in favor of using better gasoline. Top tier brands (see first source) have detergent levels high enough that not only is fuel injector cleaning unnecessary, but carbon deposits in the combustion chamber and on valves is controlled. At least one of the brands (Conoco) is cheaper than many non-top tier brands locally.STP super concentrated fuel injector cleaner?
This tells you all you need to know. %26quot;at least half full tank%26quot; In other words the at least is minimum. Don't put it in a near empty tank and start driving. Have a half tank AT LEAST, but you could have more gas and it will still work. I've had very good results with Lucas Injector Cleaner.STP super concentrated fuel injector cleaner?
Why not use something once ot twice a year that's more concentrated than either of these two products. NAPA and Carquest has 3M Total Fuel System Cleaner which should be mixed with no more than 14 gallons of gas. Dump the 16 oz. plastic bottle of cleaner in the empty fuel tank then fill with no more than 14 gallons of gas. The object here is to rince the concentrate that's coating the gas filler tube into the fuel tank.
The 3M Corporation makes hundreds of household and commercial products. They're not in a habit of distributing anything that doesn't work perfectly.STP super concentrated fuel injector cleaner?
It dosen't matter when you add eather as long as when your done you have at least a half tank of gas.
If you add eather to a 1/4 tank of gas it would be to strong.
Adding every 3,000 miles is good but, every tank would be just a wast of money.STP super concentrated fuel injector cleaner?
Chevron is one of the best cleaners out there. BUT, if you use a %26quot;top tier%26quot; fuel that has enough detergent built into it, you never need to add anything to your tank. BTW, you CAN just add it to your tank since fuel injected cars have @ fuel lines. One goes to the engine, and the other goes to the tank. In other words, the engine uses a small amount of fuel, and the rest is sent back to the tank. THe fuel filter, then, is constantly cleaning the fuel, and the fuel is constantly being mixed. It is NOT like the old carburetor cars at all!!
