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High oil level in Ford tranny.

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Roger

07-15-2003 21:11:26




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Ok guys, just a quick question. I was checking my tranny oil tonight and I found that the level is really high, up past the cross hatch and well into the words stamped into the stick. Will an overfull tranny damage the components? Sometimes it shifts a bit hard going up into OD, like a momentary engine braking effect, or hangs on to OD a bit too long in the city. I really would like to avoid pulling the pan to lower the oil level. At 100k miles though, it probably isn't a bad idea. It's a Ford, 4spd overdrive in an 87 5.0l Mustang. It pulled a 4X8 UHaul across Canada (2500 miles) like it wasn't even there. No oil cooler, but as the days were in the 40's and 30's Fahrenheit, and the trip was mostly level prairie, I didn't think it needed one. Thanks.

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kesiladi

07-16-2003 16:06:41




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 Re: High oil level in Ford tranny. in reply to Roger, 07-15-2003 21:11:26  
I just went through a similiar situation with my '90 Chevy Suburban w/140K milies on it. I could not for the life of me figure out where the extra fluid came from as I do almost all the maintenance myself. I lowered the level with some extra tygon tubing I had lying around and the siphon method (it took several hours !) Shifted great, smooth as silk. Somehow lost the 3rd gear a day or two later - @#$% ! Seems the torque converter check valve fails and causes this 'extra fluid' to accumulate in the pan. A trip to the tranny shop and $1600 dollars later I have a rebuilt tranny. My advice - at the age and mileage of yours, let a good tranny shop (not some local garage, dealer or tire shop) change the fluid with the pressure method for piece of mind.

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Mark In Mi.

07-16-2003 00:46:09




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 Re: High oil level in Ford tranny. in reply to Roger, 07-15-2003 21:11:26  
Just To Be Sure- ENGINE IDLING IN PARK- oil level will be higher w/ engine off.
Good Luck!



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Mark In Mi.

07-16-2003 00:31:35




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 Re: High oil level in Ford tranny. in reply to Roger, 07-15-2003 21:11:26  
Trans. oil level is REAL IMPORTANT!If the level is way over CrossHatch marks, it could get whipped into a foam that would cause the trans. to slip. As the trans. slips, it creates more heat which causes the oil to expand more,slip more, etc. The correct way to set oil is to drive vehicle about 10 miles to warm up everything and then stop on a level surface. With foot on brake, run shifter thru all gears- then put in park. Check level and should be in the CrossHatch area. You can lower level w/o removing pan by taking off one of the cooler lines at the radiator and starting the engine for a few seconds. Reconnect the line and run the engine for a few mins. and recheck level. I have an engine oil pump for changing oil in a boat- has a long tube for dipstick, which works great. Level should be around bottom of CrossHatch for best performance- to allow for expansion. I suggest using ONLY the oil that vehicle warranty book suggests, where I work we test auto.transmissions and have found problems with some types of oil. And change the oil and filter(in warranty book) when it says to.

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Roger

07-16-2003 13:11:34




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 Re: Re: High oil level in Ford tranny. in reply to Mark In Mi., 07-16-2003 00:31:35  
Did the suction gun trick with a length of 3/8" teflon tubing. Oil level is now correct. No difference in driving, but it is nice to know it is now within spec.



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