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Transmission fluid level

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Ron
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I would add about 1/2 quart, then start checking it.

Thank you very much, for the feedback and being a customer!
Thank you sir. You did all the hard work of measuring , forming, and building this wonderful device. The only hard part I had was getting the cap off of the old dipstick.
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First Name
Ron
Joined
Jul 10, 2026
Threads
0
Messages
5
Reaction score
7
Location
Mclean Texas
Vehicle(s)
2021 Ford Ranger
Occupation
Farm and Ranch
I don't recall... Here is what I would do. Have a quart or 2 of fluid on hand.
I suspect you won't add a full quart.
  1. Check your fluid level cold. The process is outlined here. Keep the truck off as much as possible, Only run it to check the level, then immediately turn it off. The fluid heats up faster than you think.
  2. Fill it cold. add a little at a time - 3-5 oz or so. Use Mike's funnel.
    (You can pour more if you have a pump to pull fluid out via the dipstick tube.)
  3. Let the fluid settle down the dipstick for a minute or two. You need a nice accurate reading.
  4. Check it. It should be between the tip of the dipstick and 1/8 - 1/4" up. NO MORE
  5. If it is not, repeat steps 2-4 until it is.
Be Patient. It won't take too long to get it right. If you doing this relatively fast you may not need to run through the gears each time.

If you overfill you're going to have the opposite problem... and it won't show up until the transmission gets hot enough to push to 200F-215F, depending on how much over you are. Then you going to have a balky transmission with all the bad behavior you've seen reported on this forum.... then it vomits!

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Thank you sir. As soon as I get it done, I will post how much so you can know
 
 








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