check your diff for slow leak

G80indy · 07-12-2011, 03:59 AM

I recently had the LSD fluid changed to Redline and the Indy shop noticed it wet around the input shaft seal ---- a common thing on the Var. M diff. lock? see this thread....E46fans M3 forum
There has never been one drop on the garage floor. Not one.
Should I pay for seal surgery or just top it off regularly?
The car is low mileage and the diff fluid was full when it was changed out.
Anyone else see this yet on their M? Anyone change seals only to see it seep again?

Beedub · 07-12-2011, 05:17 AM

mine isnt??? 10k miles and being used to deploy 450rwhp......

i hope this isnt something thats going to keep needing replacement, i track and use my car hard pretty much everytime i drive it also.......

tekmoe · 07-12-2011, 08:16 AM

I had a very small amount of diff fluid on the input shaft when I was changing my diff fluid to Redline. I wiped it off with a paper towel about 4000 miles ago. Just checked it and its still dry.

G80indy · 07-12-2011, 04:07 PM

Quote:

Originally Posted by tekmoe

I had a very small amount of diff fluid on the input shaft when I was changing my diff fluid to Redline. I wiped it off with a paper towel about 4000 miles ago. Just checked it and its still dry.

that gives me hope.
i'll have to check it tonight

Finnegan · 07-12-2011, 04:29 PM

Mine is nice and dry after the repair work was done (and that's with three track days on top of some normal driving).

lo-tek · 07-13-2011, 07:49 PM

FWIW I had mine in at Classic for its Inspection II and they noted a leak in that area. CPO warranty FTW.

G80indy · 07-16-2011, 01:48 AM

Inspected under the car tonight. The area is not dripping or wet, so I think it's a non-issue. The service guys think the LSD was overfilled prior and that caused the excess fluid to find it's way out. With the correct level of Redline, it is good to go.

O-cha · 07-16-2011, 01:56 AM

After 100k miles you still wouldn't have low fluid. Ignore it, or have it fixed if you want (and possibly make more problems by doing so)

G80indy · 07-17-2011, 09:29 PM

Thanks for your input. Are you a mechanic by chance? You sure know your stuff

07-12-2011, 03:59 AM	#1
G80indy Save the Manuals 1714 Rep 2,937 Posts Drives: Z3, E46, G80 Join Date: May 2005 Location: Indy iTrader: (0)	check your diff for slow leak I recently had the LSD fluid changed to Redline and the Indy shop noticed it wet around the input shaft seal ---- a common thing on the Var. M diff. lock? see this thread....E46fans M3 forum There has never been one drop on the garage floor. Not one. Should I pay for seal surgery or just top it off regularly? The car is low mileage and the diff fluid was full when it was changed out. Anyone else see this yet on their M? Anyone change seals only to see it seep again? __________________ 2023 G80 6MT, CCBs 2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT
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07-12-2011, 05:17 AM	#2
Beedub Major General 423 Rep 5,328 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	mine isnt??? 10k miles and being used to deploy 450rwhp...... i hope this isnt something thats going to keep needing replacement, i track and use my car hard pretty much everytime i drive it also....... __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com
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07-12-2011, 08:16 AM	#3
tekmoe Captain 55 Rep 844 Posts Drives: ///M Join Date: Nov 2010 Location: Texas iTrader: (0)	I had a very small amount of diff fluid on the input shaft when I was changing my diff fluid to Redline. I wiped it off with a paper towel about 4000 miles ago. Just checked it and its still dry.
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07-12-2011, 04:29 PM	#5
Finnegan Dog Listener 703 Rep 7,850 Posts Drives: Z4M/. Z3M, E36/46 M3 Join Date: Oct 2008 Location: Teaching the dog to slalom iTrader: (22)	Mine is nice and dry after the repair work was done (and that's with three track days on top of some normal driving).
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07-13-2011, 07:49 PM	#6
lo-tek I'm a PC 6 Rep 168 Posts Drives: 2012 135i M-Sport Coupe Join Date: Jul 2008 Location: Denton, Texas iTrader: (1)	FWIW I had mine in at Classic for its Inspection II and they noted a leak in that area. CPO warranty FTW.
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07-16-2011, 01:48 AM	#7
G80indy Save the Manuals 1714 Rep 2,937 Posts Drives: Z3, E46, G80 Join Date: May 2005 Location: Indy iTrader: (0)	Inspected under the car tonight. The area is not dripping or wet, so I think it's a non-issue. The service guys think the LSD was overfilled prior and that caused the excess fluid to find it's way out. With the correct level of Redline, it is good to go. __________________ 2023 G80 6MT, CCBs 2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT
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07-16-2011, 01:56 AM	#8
O-cha Brigadier General 218 Rep 4,726 Posts Drives: Mcoupe Join Date: Oct 2007 Location: In front of you iTrader: (2)	After 100k miles you still wouldn't have low fluid. Ignore it, or have it fixed if you want (and possibly make more problems by doing so) __________________
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07-17-2011, 09:29 PM	#9
G80indy Save the Manuals 1714 Rep 2,937 Posts Drives: Z3, E46, G80 Join Date: May 2005 Location: Indy iTrader: (0)	Thanks for your input. Are you a mechanic by chance? You sure know your stuff __________________ 2023 G80 6MT, CCBs 2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT
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