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tranny fluid screwup

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Old Dec 24, 2015 | 06:55 PM
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tranny fluid screwup

I finally had time to do some long overdue maintenance on my '04 F 350 6.0 diesel. Stopped at parts store and got filters and tranny fluid. Told partsman I needed Mercon SP fluid which is noted on dipstick and in manual. After checking several types,he gave me a case of fluid. Went home,drained fluid,changed internal and external filters,filled to proper level and ran truck in neutral for several minutes and rechecked. When throwing out empty jugs I read the bottle label and found that fluid was not SP compatable. Now the 8 qts I added is mixed with the remainder of the 17 qt total capacity. I drained the pan and lines near external filter. I'm questioning what to do next. What happens when these types are mixed? Can I run it for a while, then change pan fluid and filters or get a full flush? Do I dare drive it at all? Truck has 96,000 and no other issues. Any advice is appreciated.
 
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Old Dec 24, 2015 | 07:02 PM
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I'd run it for a few minutes and change the fluid again. There is no need to change the filters again.

What ratings did the fluid have? If it was MERCON LV you don't have to do anything, that's fine. Anything else will cause problems.
 
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Old Dec 24, 2015 | 08:18 PM
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tranny fluid screwup

Fluid was for dextron 11 and 111 or mercon only. What is basic diferances in fluid? Does it cause problems with seals or filters? Will change fluid now ,then how long shall go till next change ?
 
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Old Dec 24, 2015 | 08:21 PM
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I cause problems with the seven solenoids, and it can cause problems with the clutches, too. I'd change it ASAP.
 
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Old Dec 24, 2015 | 08:36 PM
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Yes, drained the pan fluid and will add correct fluid and run for a few minutes and repeat, but do u think that will be sufficient ?
 
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Old Dec 24, 2015 | 08:44 PM
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I sure hope that Parts Store is helping to pay for all this flushing
& lesson learned to read bottles prior....Good luck
 
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Old Dec 24, 2015 | 09:30 PM
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I would go for getting the system more thoroughly flushed, perhaps by the dealer. It's way cheaper and much less downtime than a tranny rebuild.
 
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Old Dec 25, 2015 | 07:46 AM
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Originally Posted by goat69
Yes, drained the pan fluid and will add correct fluid and run for a few minutes and repeat, but do u think that will be sufficient ?

1st drain and refill 47% of the bad fluid is still in the tranny
2nd drain and refill 23.5% of the bad fluid is still in the tranny
3rd drain and refill 11.75% of the bad fluid is still in the tranny
4th drain and refill 5.875% of the bad fluid is still in the tranny
 
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Old Dec 25, 2015 | 10:48 AM
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Originally Posted by davester250
I would go for getting the system more thoroughly flushed, perhaps by the dealer. It's way cheaper and much less downtime than a tranny rebuild.
Agreed, a Hot Flush at the Dealer will replace ALL fluid & u don't have to drop the pan again
 
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Old Dec 25, 2015 | 05:46 PM
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Thanks for all advise. I think i will fill,run few minutes, drain, fill, then hot flush in near future.
 
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