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Thread: Engine Flush

  1. #1
    Join Date
    Jul 2001
    Location
    Mt. Vernon, IL.
    Posts
    2,184

    Question Engine Flush

    Im going to change my oil this weekend and switch over to synthetic. I was wondering is there an engine flush for quads similar to what is used in cars. I want to make sure I get out all the old oil.
    District 18 #92
    04' 450R

  2. #2
    Guest

    Yes

    Yes there is. I have a 300ex but it should be the same way on a 400ex. There should be a bolt under the quad by the skidplate right below the engine. Take that bolt off and let all the oil drip out. You probably want to put a pan where the oil is dripping. Let it drip for a little bit until it isnt dripping anymore. And put the bolt back on. I think you should put the oil filter in before you put the oil in, but that is just how I do it. (MAKE SURE THE OIL FILTER IS IN THE RIGHT WAY-VERY CRITICAL!!!!!!!). And pour the new oil in where the dipstick is. I know I answered more than you asked but what the heck. Hope this helped.

    PS. Before you let the oil drip out. It helps to let the quad run for a few minutes so the oil is a little hotter and the oil drips out more quickly.

  3. #3
    Join Date
    Jul 2001
    Location
    Mt. Vernon, IL.
    Posts
    2,184
    Thanks redrider but I know how to change my oil, LOL
    My question is if there is an engine additive you use when changing oil to flush out all the gunk and build up. Ive used it in my truck before but didnt know if there was anything available for quads.
    District 18 #92
    04' 450R

  4. #4
    Join Date
    Jun 2001
    Location
    Upstate, NY
    Posts
    2,311
    Be very afraid of engine oil 'additives' and 'flushes'...

    snake oil

    When we have a low mileage car / truck (under 60k) that's decided to grenade it's motor in the shop, the conversation almost always starts something like "I change my oil every 4k, and I even just started using [insert oil additive name here]"

    While reading the bottle, if it sounds to good to be true, it is

    my .02

    Leo
    You know the world is going crazy when France is accusing the US of arrogance, and Germany doesn't want to go to war.

  5. #5
    Join Date
    Aug 2001
    Location
    Joliet, Il
    Posts
    2,356
    Drain your old oil, then flush it with your new synthetic, then top it off with the fresh synthetic. You shouldn't have much off that old oil reisdue after that.
    01' 416EX, 10.8:1 w/ Hot Cams stageII, LSR E-brake block off, nerf bars, renthal bars, k&n power up kit, full pro-circuit exhaust. Works triple rates w/rezzies, wild skinz shock covers, removed choke, 42 pilot, 165 main.

    2002 Pontiac Bonneville SSEI
    1996 Chevy Silverado Z71....
    1986 Oldsmobile 442 Nice street car, mildly built small block.
    1964 Oldsmobile Starfire
    1999 KX 250
    2003 TTR 90 (pit bike)
    2002 PW 50 daughter's bike
    1984 HD Shovelhead, yes it shakes like a b****, and marks it's spot with oil everywhere we go!

    Sold, but not forgotten...1987 250R. 1200 Harley Sportster Custom

  6. #6
    Join Date
    Apr 2001
    Location
    Vancouver, WA
    Posts
    2,018
    I just let mine sit overnight. I just pull the plugs out before going in for the evening, then finish the rest the next day.

  7. #7
    Join Date
    Dec 2000
    Location
    Quasqueton, Iowa. USA
    Posts
    1,720
    I have heard of guys using diesel fuel to flush there engine if they get water in it. They usually flush it twice with diesel then (only run the engine for about a minute with the diesel), twice with automotive oil. Then put the synthetic in. I would not recomend this for every oil change, just if you got water in the oil.
    2002 KTM 400 EXC, this bike is awsome!

    Quads I use to own:
    FDO 463ex, Gas Gas 300, Gas Gas 450, Rancher, Yamaha Warrior, ATC Big Red.

    If you can't afford to fix it or replace it, don't ask to ride it!

  8. #8
    Guest
    I think if you drain all the oil including the crankcase oil bolt, maybe run the new oil through for a little while, drain it too, then fill it back up again you'll be fine. I went to synthetic and just drained my oil and refilled with the new. Ive had no problems so far.

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