C6 transmission question
Thread Starter
|
Trailering
Joined: Dec 2011
Posts: 20
Likes: 0
C6 transmission question
I have a 1986 F250 diesel with the C6 auto transmission. If the truck sits for an extended amount of time, it seems to leak transmission fluid.
It has a B&M deep transmission pan.
The two questions I have are:
1. Will having this pan on the transmission effect the stock dip stick? Should the stick read the same, deep pan or not?
2. Is it common to leak fluid if sitting for over a month or so.
Thanks, RG
It has a B&M deep transmission pan.
The two questions I have are:
1. Will having this pan on the transmission effect the stock dip stick? Should the stick read the same, deep pan or not?
2. Is it common to leak fluid if sitting for over a month or so.
Thanks, RG
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
The depth of the pan has no impact on the reading on the dipstick. It will take more fluid to bring it up to that point, but you still have to have it up to the Full mark.
As for leaks after it sits, I've had that problem as well. And, I didn't solve it - except it did seem to no longer be a problem after I sold it.
I never did figure out why it only leaked after it sat, but the leak on mine was from the shift lever, where it comes through the case.
As for leaks after it sits, I've had that problem as well. And, I didn't solve it - except it did seem to no longer be a problem after I sold it.
I never did figure out why it only leaked after it sat, but the leak on mine was from the shift lever, where it comes through the case.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
How long has it been since the fluid was changed? The various additives go away over time, including the one that causes seals to swell. So a change might help, if not fix, the problem. Or, a dose of an additive for seals.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
If it has only been a year and 2800 miles you shouldn't need an additive. The additive in the fluid should still be fine.
Trending Topics
Post Fiend
Joined: Feb 2009
Posts: 8,005
Likes: 7
From: Ottawa, Ontario
Since it only leaks when it sits long periods of time, sounds like maybe the front seal.
If it doesn't leak that much, I wouldn't worry about it, just check it once in a while and top up. Carefull not to overfill it either, that be bad...
If it doesn't leak that much, I wouldn't worry about it, just check it once in a while and top up. Carefull not to overfill it either, that be bad...
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Posting Guru
Joined: Jan 2013
Posts: 1,933
Likes: 0
From: VA
Try AT 205 Reseal. That stuff is great for sealing up little leaks. I've used it successfully in a boat steering system and in a jack. Worked both times for me. I've heard a lot of good thing from other people about it too. Amazon.com has it for under $10.
Post Fiend
Joined: Feb 2009
Posts: 8,005
Likes: 7
From: Ottawa, Ontario
No, overfilling it would make the fluid foam up in air bubbles, then that makes the tranny slip and burn up...
That seal leaking is normal for a 25+ year old transmission that isn't used regularly.
That seal leaking is normal for a 25+ year old transmission that isn't used regularly.
Thread
Thread Starter
Forum
Replies
Last Post
wotan
1973 - 1979 F-100 & Larger F-Series Trucks
7
Jul 9, 2013 09:49 AM
ownedby2labs
Clutch, Transmission, Differential, Axle & Transfer Case
2
Oct 29, 2009 07:50 PM
tripndrag
Clutch, Transmission, Differential, Axle & Transfer Case
5
Jul 21, 2007 05:01 PM
bryan78f1504x4351mc6A
Clutch, Transmission, Differential, Axle & Transfer Case
4
Aug 1, 2003 09:58 AM