Importance Of Fresh Good Gas !

Discussion in 'General Questions' started by Esteban, Jul 29, 2009.

  1. Esteban

    Esteban Active Member

    I have seen more motor problems, all size motors, in the past year than I have ever seen, & I am 60 years old . I would say that 80% of these have been caused by the gas ! Sputtering, hard starting , skipping at high speed, stalling, etc., etc., & the list goes on .
    The FIRST thing I do with any motor problem , if it has spark, is start with the fuel. Today's fuel will not " store " as well as old fuel. On ALL my small motors I use 89 octane , an inline fuel filter, some additive like Startron/Stabil [ blue color ] , & never let the fuel set in the tank for more than a month. On 2 strokes, I follow the same procedure above , but also use the correct amount of a quality 2 cycle oil, shut off fuel , & allow engine to run til it dies after every use, unless I will be riding it in the next day or two.
    I know that this works 'cause I use my Robin weedeater, that I bought new in 1980, & it has failed to start only 2 times !!!

  2. Happy Valley

    Happy Valley Active Member

    A good reminder and timely as well. IIRC, we are still in the EPA review period on E15 which if enacted is going to effect small engines in not a good way.
  3. Mountainman

    Mountainman Active Member

    this gas THING is hard for me to figure out ??
    three THINGS here were not driven for one full year
    motor home, Jeep and Dodge Truck
    same old gas setting in them

    but I did learn a few THINGS from this site towards the middle to end of storage time

    to add Sea Foam and also a octane boaster to stored gases ----- I did that

    time came to fire them all back up
    all went well
    Dodge was due for an immediate smog test
    had a full tank of old gas
    THING passed with flying colors
    had close to no readings on many parts ??
    had told the guy testing that it may fail due to the old gas
    he as I was amazed ??

    got a car that won't pass smog
    throw some very old gas into it -- NO -- that should not work -- don't really get it ??

    Last edited: Jul 29, 2009
  4. Esteban

    Esteban Active Member

    Yep. I feel that E-15 will be here sooner or later. I fish a lot in the Gulf, & you wouldn't believe the problems boaters are having. Especially those with 2 strokes. Also, E-10 has been eating away certain types of fuel tanks. E-15 will only be worse.
    KEEP it clean !
  5. Esteban

    Esteban Active Member

    Much has to do with where you get the gas && where they get it from. They can add " as much " as 10% ethanol to the gas, but sometimes there will be less than 2%. It is just a " hit & miss " I think with that.
    You having gas that was in the tank for more than a year, may have not had any added at all. You won't find that now. Best I can recommend is use the additive I mentioned in my post & keep the tank full . Seafoam, while a great product, doesn't do anything for storing gas. I doubt ANY product is going to " restore " bad gas at all. Just got thru with a friend's boat,& out of 5-6 gallons of old gas, it had nearly a PINT of water in it !
  6. Happy Valley

    Happy Valley Active Member

    Ethanol is hygroscopic, it attracts moisture from the atmosphere and retains it.
    There's not a lot of discussion here in the US on this, other than forums like this where the truth is told but here is part of a FAQ from the Hyundai Australia website I found interesting:

    Last edited by a moderator: Dec 15, 2015
  7. HoughMade

    HoughMade Guest

    I good not get a single pop when I went to start my bike for the first time after winter- and I had treated the gas with Sta-Bil and run it through the system. I had to drain the tank and the bowl and replace it all with fresh gas.
  8. proline20

    proline20 New Member

    89 Octane all the way! Hot muggy summer days are not very nice to stored gas. I read on the sta-bil bottle that after 6 months of stored treated gas you can add again for another 6 mos. of storage. Did this on my hurricane generator and still fires first pull every 30 days when tested. Re-treatment makes sense since we have federal reserve gas to the tune of millions of gallons in tanks - they must be doing something?
    I'm also involved in the marine industry - gas is not nice to outboard engines, both 2 and 4 stroke ones...
  9. HoughMade

    HoughMade Guest

    The gasoline is not the problem. It is the additives that are added downstream from the larger storage facilities.
  10. arceeguy

    arceeguy Active Member

    The E10 that is being forced on us is to partly to blame.
    As mentioned, the ethanol attracts moisture. I suppose it negates the need for "drygas" here in the winter, but it will cause your small engine to run like carp. The ethanol is also not too friendly to the rubber seals in your carb and engine.

    I use fuel stabilizer, but even then, I dump my gas cans into my car and get fresh stuff every couple of months.

    My generators are run dry, tanks emptied and fuel bowls removed and drained after every use. I want them to be ready when I need them! (hopefully only because a utility pole was knocked down, and not a natural disaster!)
  11. HoughMade

    HoughMade Guest

    Weve had 10% ethanol here since the '80s.
  12. Silvaire

    Silvaire Member

    I've had the same problems as those mentioned here. I drain the tanks of my small engines in the fall and run them dry. I still have problems in the Spring and often have to go through the carbs and replace fuel lines. Until.


    Last edited: Jul 30, 2009
  13. Esteban

    Esteban Active Member

  14. mattysids

    mattysids Member

    From my experience on the water with Startron, it not only fixes ethanol problems but also cleans out the entire assembly including the carb, ports, piston, muffler, etc, and unlike other additives it removes deposits slowly rather than a really harsh detergent that can loosen huge chunks which can jam things up
  15. GearNut

    GearNut Active Member

    Here's what I do know about ethanol's damaging properties.
    It attacks and breaks down most rubber fuel lines, o-rings, and seals that are commonly used these days. A fuel line gone bad will introduce a fine black sand looking substance into the carburetor. A rubber tip on a float needle will swell up to twice it's origional size, upsetting the float height setting, restricting fuel flow past it, and becoming soft and tearing easily.
    Any o-rings or seals will swell up too, no longer fitting into thier intented space as designed. This will cause air or fuel leaks.
    Almost all fuel tank liners are succeptable to attack too. The liner resists gas, not alcohol blends.
    It digests aluminum, having a near acidic effect as it pits and corrodes the exposed surfaces. It also attacks brass, giving it a green coating caused by the corrosion, although it erodes at a much slower rate than aluminum.
    Overall it seems that ethanol is not compatible with carbureted engines what-so-ever.
    New fuel injected engines utilise alot of stainless steel and new formulated rubber and plastic components in their fuel delivery systems that are compatible with E10 and E85.
    Perhaps the ethanol blends have a side effect of rendering all carbureted engines obsolete due to incompatibility?
    A way to force the general public into "more efficient" or "environmentally friendly emmissions" vehicles?