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  1. #1
    Bob Yates
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    Default How do you really check tranny fluid in a 700R4

    You know I feel kind of dumb asking this question. I've read what the owners manual stated for my 86 C4 with a 700R4 but it seems a little muddy to me. Do you check it hot ( after 15 miles of driving) or Cold or warm or do you stand on your head and bark three times at the moon... Thanks for any info . I am very glad I found this forum it has helped me a lot. I hope I can return the help to others ... Bob Yates ( Mr. Badwrench)

  2. #2
    Member Hrtbeat1's Avatar
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    Default Auto fluid levels

    You should always check the fluid level in an automatic with the fluid at normal operating temp. So yes drive around for a bit. Also when you check the level it is best to have someone else around as the vehicle should be in gear (preferabily drive). this can be done by setting the parking brake and chocking the wheels, but it is easier if someone else holds the brake.

  3. #3
    78SilvAnniv
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    Default Re: Auto fluid levels

    Originally posted by Hrtbeat1
    Also when you check the level it is best to have someone else around as the vehicle should be in gear (preferabily drive). this can be done by setting the parking brake and chocking the wheels, but it is easier if someone else holds the brake.
    Safer, too!
    I've always checked mine at the gas station (definitely hot), engine running and in park. Have I been checking the TH350 incorrectly, or is this the preferred method for 700R4s?
    Heidi

  4. #4
    Vettelt193's Avatar
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    Default

    They tell you to check the car in park... it isn't that safe to be under the hood of a car with it in gear anyway, even if someone is in the car. When you check the fluid, make sure the car is warmed up by driving it around, and shift through all the gears, from 1 to 2 to 3 to Drive, then Neutral, reverse, then Park. just a couple of seconds in each will do the job. I read this a while back and it has worked for me ever since.

  5. #5
    Bob Yates
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    Default

    Heidi ...you are right to check yours . I have always checked GM tranny's that way,but here is what's in the Owner's Manual.... to check the fluid level, first set the parking brake,thenstart the engine in "P" ( Park), and let idle for two minutes. you must check the fluid level with the engine running at slow idle and the vehicle level. ( I guess this means normal idle )why don't they say that ? You cannot read the correct fluid level if you have just driven the vehicle for a long time at high speed, in city traffic in hot weather, or if the vehicle has been pulling a trailer. ( Here's the good part ) wait until the fluid cools down ( about 30 minutes ).Remove the dipstick ( not the one who wrote this procedure ) but the one located at the rear of the engine compartment on the passenger's side. ( Here's another goodie ) Carefully touch the wet end of the dipstick to find out if the fluid is cool, warm or hot. Wipe it clean and push it back in until the cap seats. Pull out the dipstick and read the fluid level...... If it felt cool ( about room temperature ) , the level should be 1/8 to 3/8 inch below the "Add" mark. The dipstick has two dimples below the "Add" mark to show this range. ( mine dosen't have these dimples )..... If it felt warm, the level should be close to the "Add" mark(either above or below)..... If it was too hot to hold, the level should be at the "Full " mark. (and buy some aloe for your finger burns)... I'm I thick or did this make any sense. Thanks to all for trying to help. To make matters worse my front seal is leaking this is why I need to check the level.....Bob Yates (Mr. Badwrench)

  6. #6
    Bob Yates
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    Default

    By the way the owners manul is from my 86 C4..... Bob Yates

  7. #7
    Vettelt193's Avatar
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    Default

    Those instructions are unreal. I am laughing my butt off over here!

  8. #8
    c4ever
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    Default

    Actually the manual is correct but REALLY

    This is meant to prevent overfilling which is more common than not. As others have said, take her for a nice CIVIL drive, car level, go through gears and back to park and top off.

    Carlo

  9. #9
    Member Hrtbeat1's Avatar
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    Default OOPS

    I kinda errored there. Always check you manual. Chevrolet calls for the trans to be in park. I was thinking of my Dodge. It says to check it in gear or Neutral. The reason for this is for some reason Dodge Torque converters (some anyways) drain the fluid while in Park (why I don't know). I know it happens though because when cold if you jump in, start it up and drop it in gear it may or maynot move until enough fluid pressure is built up and it gets circulating. If you start it and let it warm up a bit in Neutral then select a gear it is fine. Just another reason not to own a Dodge LOL.

  10. #10
    Bob Yates
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    Default

    Thanks to all for your comments. I'm going to go with you guys and gals on checking the fluid level . It makes the most sense to me. I've been doing it that way all of my mechanical life....Bob Yates (Mr. Badwrench)

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