2 much trans. oil
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Junior Member
Joined: Jul 2005
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2 much trans. oil
I recently changed my trans. oil @ 30k miles in my 03 F150 Super crew trk.Well I added a little 2 much trans. oil. My question is, will 2 much oil damage my trans? or @ the very least, will it affect my gas milage, in the way of throwing off the timing of my trans. If I have to drop my pan again to let some oil out I will. Any info. will be greatly appreciated.
Senior Member
Joined: Dec 2004
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From: Denver colorado
It depends on how much more you have in there. If you have to much, it could get the clutches to wet and cause premature failure. If it is more than 3/4 of a quart overfull, I would drain some.
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Joined: Apr 2005
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From: Tennessee
You can make a fluid remover fairly easily. Take a quart jar and solder two copper tubes (5/16 or so) into the lid. One tube should go almost to the bottom of the jar and the other should stop just inside the lid. Connect some plastic tubing to the tube extending almost to the jar's bottom and run the other end down your trans filler tube into the pan. Hook a shop vac or some vacuum source to the short tube. When the fluid fills the jar about 3/4 full turn off the vacuum and empty the jar. It takes a little rigging and some electrical tape to connect the vac to the small tube but I've done this and it works great.
Senior Member
Joined: Oct 2003
Posts: 549
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From: Arizona
Originally Posted by fordninja
If you have to much, it could get the clutches to wet and cause premature failure.
The clutches are all filled with oil, so how can you get them too wet? Have you ever looked inside of an automatic?
The problem with overfilling is that the rotating parts of the transmission will be rotating in the oil. This will whip the oil into a foam. Foam won't lubricate, so you can destroy the transmission!
You can remove one of the cooler lines and put it in a bucket, then start the engine for a few seconds. It should take about 15 seconds to pump out a quart.
Senior Member
Joined: Jul 2004
Posts: 6,200
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From: Easton, Pa.
You have to fully warm the engine up before checking the final fluid level (with the engine running) in order to tell how much needs to be removed.
Look at the dip stick; the level should be in the cross hatch areas while hot and running.
Reason it is done this way is because the fluid expands and it needs to be pumping through the trans as it would while driving.
Otherwise you end up with too much or not enough.
Look at the dip stick; the level should be in the cross hatch areas while hot and running.
Reason it is done this way is because the fluid expands and it needs to be pumping through the trans as it would while driving.
Otherwise you end up with too much or not enough.
