Fuel injector cleaner *after* oil change

Discussion in 'General Motoring' started by Melissa, Jul 16, 2007.

  1. Melissa

    Melissa Guest

    Chalk it up to poor planning, but I just got my oil changed yesterday
    and would still like to throw in some fuel injector cleaner (Techron,
    from what I read) before I fill up again. Is this a bad idea... should
    I just wait for my next oil change? btw... '92 240 w/ 135k...
    Melissa, Jul 16, 2007
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  2. It's fine, but just to clarify: the cleaner goes in the fuel tank rather
    than in the oil.

    Michael Pardee, Jul 17, 2007
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  3. Melissa

    NoOne Guest

    When I failed my emission test, I first used a liquid cleaner strictly
    for fuel injectors and the result was marginal. I would say the car
    drove marginally better. A 5-10% improvement at best.

    I then used a liquid cleaner for injectors, valves, fuel system, etc.
    and this has made a NEW car out of my 93 240. I'm telling you, it's
    NOT the same car. Acceleration is smooth and can be extremely
    aggressive if needed.

    Btw, I did pass the emission test after using the cleaner.

    My $0.02.
    NoOne, Jul 17, 2007
  4. Melissa

    James Sweet Guest

    What was the cleaner? I've tried various concoctions in different cars and
    have never actually noticed a difference.
    James Sweet, Jul 18, 2007
  5. Melissa

    NoOne Guest

    Go to Canadian Tire web site and do a search on "ultra fuel system
    treatment". Sells for $14 and is Candian Tire's brand, Motormaster.
    It is a red liquid in a transparent plastic bottle.

    Like I wrote in the other thread;

    "In the first emissions test, HC was at 83 (linit is 66), CO was at
    0.40 (limit is 0.37) and NO was at 903 (limit is 505).

    After using the "Ultra Fuel System Treatment",

    I got 66 for HC ( a 20.4% reduction from last test),
    CO at 0.23 (a 42.5% reduction) and NO at 451 (a 50% reduction)."

    The car was driving half city, half highway. I bought a house and my
    daily weekly travel involves both highway and city driving.

    I could feel the difference way before I took the last test. I guess
    HC is still high cause of all the crud that ended up in the oil.

    I'm running a second bottle right now. And I intend to run a third
    bottle later in the fall before I do my next oil change.
    NoOne, Jul 18, 2007
  6. Melissa

    KLB Guest

    After reading NoOne's earlier post about this Fuel Treatment I too went to
    Canadian Tire, found the product and tried a bottle (in my gas tank, of

    I am quite sceptical about these sort of products but I must admit that the
    engine does seem to be running a little smother that it was.

    If one can notice a slight difference without measuring with any
    technological equipment then the product could be worth it's cost but I will
    say that $14 CND is fairly steep.

    Not sure which part of the Great White North NoOne is from but the sale for
    this product ($9 CND) came about two weeks after NoOne first mentioned it.
    I wonder if CTC sales travel from West to East?

    My worry is, I had asked a mechanic about using this sort of thing and his
    advice was that it was ok if you didn't use it too much (just once and a
    while). Couldn't get him to elaborate on this other that to indicate that
    using this type of product too much may cause some sort of damage or

    The bottle says that the product is good for 6000 Km but adding a bottle
    every 6000 Km is going to make the price of High-Test Gasoline a little too
    high for me.

    Anybody have any thoughts on the continuous use of this sort of product?

    Only listed ingredient is Mineral Sprits. (varsol?)
    KLB, Jul 18, 2007
  7. I am a proponent of using injector cleaner a few times a year unless the
    engine is getting "top tier" gasoline regularly. I've also heard happy users
    of a product called "Seafoam" but mostly I think those products should be
    reserved for when there is a specific complaint.

    Michael Pardee, Jul 18, 2007
  8. Melissa

    NoOne Guest

    I live in Ottawa, Ontario, Canada (for better or for worst).

    I've never used any such products. Never! I never believed in them.

    Like I wrote in another post, I followed the advice of James Sweet
    who suggested to use Techron. Excuse my ignorance, but I don't know
    what Techron is exactly. A brand name or the a product itself.

    In any case, I understood what James suggested and went to CT to have
    a look at the products being sold.

    I do NOT particularly like the Canadian Tire's brand, Motormaster. I
    feel that more often than not, you'll end up with an inferior product.
    In particular when it comes to rechargeable batteries for tools. So I
    basically never, ever buy a Motormaster product.

    I figured that since it is impossible for me to know if brand X of
    cleaner is better than brand Y, then I might as well take the least
    expensive one. And fortunately for me, the $14 bottle was on sale for
    $9. That's how I ended up buying the Motormaster brand.

    Actually, I also bough the fuel injectors cleaner, also by
    Motormaster. It was also on sale.

    Like I said in another post, I first tried the fuel injectors cleaner
    and the improvement was negligeable.

    Also, I suspect that the suggestion made by another poster, Clay, as
    to use the car in situations were the engine will warm up and cool
    often is preferable to long highway drive. As Clay pointed out and I
    suspect that he might be right, that situations where the crud heats
    up and then cools down is preferable in order to get rid of it. IOW,
    it is the action of the liquid in combination with the process of
    heating and cooling that eventually breaks it up.

    As for me, my only regret is that I cannot have my car tested again to
    see if further treatment will have further impact on the emissions
    test. Guess I'll find out in two years :-(

    I do not intend to use such a product on a regular basis. I used it
    once. I'm doing a second treatment right now and I'll do a third
    treatment prior to my oil change. That's it, that's all.
    NoOne, Jul 18, 2007
  9. Melissa

    James Sweet Guest

    I'm not disputing your claims, I just haven't seen results like that on my
    own car, but I'm willing to give it a try. The nearest Canadian Tire is
    about 2.5 hours from me up across the border so that doesn't do me much
    good, must be something comparable available down here though.
    James Sweet, Jul 19, 2007
  10. Melissa

    Gary Heston Guest

    Your mechanic might be concerned that the solvent (which is what all these
    fuel system/injector cleaners are) might damage rubber or plastic parts
    which weren't designed for frequent/constant contact with them.
    AKA paint thinner. Buy by the gallon at a paint/hardware store for about
    what you paid for your bottle.

    Gary Heston, Jul 19, 2007
  11. Melissa

    Roadie Guest

    Why do you want to all of a sudden throw in some fuel injector
    cleaner? Gasolines are complex products that include several
    additives including an injector cleaner. If your car is running rough
    it would be much better to find out the reason why and fix the cause.

    Most of these bottled automotive elixirs can be said to do no harm,
    but that's about it.
    Roadie, Jul 19, 2007
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