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#517348 - 08/17/05 12:24 AM Lucas HD oil stabilizer to stop a minor rear axle seal leak?
wavinwayne Offline


Registered: 01/06/05
Posts: 7522
Loc: North Alabama
I recently had the rear axle seals & rear axle lubricant (MC 75w140 synthetic) replaced on my wife's '97 Expedition with 114k miles. The shop that did the work has done work for me in the past & I trust that they did the job right. But for some reason, the pass. side axle seal that was leaking still seems to be leaking (just a little).

Would it be an awful thing to add a little Lucas Heavy Duty oil stabilizer to the gear oil to try & slow/stop the leak? The Lucas bottle says it can help to stop leaks in rear ends. I have access to a boatload of this stuff, at no cost to me. What say the BITOGers?

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#517349 - 08/17/05 01:38 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
Add it or preferably the synthetic version and see if it helps.
If not, then you'll have to fix the true cause of the problem.

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#517350 - 08/18/05 09:26 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
MolaKule Offline


Registered: 06/05/02
Posts: 15047
Loc: Iowegia
My advice is to try and condition the seals with ARX first before adding anything Lucas.

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#517351 - 08/18/05 09:38 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
wavinwayne Offline


Registered: 01/06/05
Posts: 7522
Loc: North Alabama
quote:
Originally posted by MolaKule:
My advice is to try and condition the seals with ARX first before adding anything Lucas.

Would I have to replace the gear oil after the ARX had "conditioned" the seals?

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#517352 - 08/17/05 10:16 PM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
MolaKule Offline


Registered: 06/05/02
Posts: 15047
Loc: Iowegia
It would be a good idea to do so, since the ARX may have cleaned some crud out of the system as well.

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#517353 - 08/17/05 11:54 PM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
bruce381 Offline


Registered: 06/23/05
Posts: 3324
Loc: Millbrae, CA
quote:
Originally posted by wavinwayne:
quote:
Originally posted by MolaKule:
My advice is to try and condition the seals with ARX first before adding anything Lucas.

Would I have to replace the gear oil after the ARX had "conditioned" the seals?
Hi Wayne I have seen your name on the ford truck forum. I just did my 99 EXPY seals and if you do not really clean the axle housing or the retainer, backing plate etc there maybe a drip or so "left" over I'd clean the backing plate real good and drive it a couple days and recheck it maybe just OLD lube.
Also I used redline which has a seal swell/conditoning additive that other syns may not have.
PS My 93 bronco 195K on it has never leaked has only DINO 80/90.
bruce

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#517354 - 08/18/05 03:07 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
Dick in Falls Church Offline


Registered: 06/01/02
Posts: 1409
Loc: Falls Church VA
Well, guess it depends on how recently recently is/.

If within the warranty period, I'd take it back and let them do it again to get it right.

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#517355 - 08/18/05 04:03 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
quote:
Originally posted by Dick in Falls Church:
Well, guess it depends on how recently recently is/.

If within the warranty period, I'd take it back and let them do it again to get it right.

[HAIL 2 U!]

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#517356 - 09/15/05 10:42 AM Re: Lucas HD oil stabilizer to stop a minor rear axle seal leak?
Wide Open Tuning Offline


Registered: 08/31/05
Posts: 9
Loc: Ft Collins, Colorado
I've done about 75 sets of those seals and found on some at a later inspection that they were weeping. I started using a thin bead of anerobic sealer around the outside of the seal where it presses into the axle tube and never had a problem again. I have also seen slightly tweeked axles cause chronic seal leaks. Running the vehicle on the rack and watching runout on the hub will point it out quick.

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