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#1598889 - 09/13/09 02:35 PM what's good for leaking valve stem seal?
daves66nova Offline


Registered: 04/11/04
Posts: 3226
Loc: los angeles
95 Camry. I think that one or more of my stem seals leaks because when i first start up the car smokes.What can i use to stop this,besides auto-rx?
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#1598899 - 09/13/09 02:40 PM Re: what's good for leaking valve stem seal? [Re: daves66nova]
ADFD1 Offline


Registered: 04/05/09
Posts: 1714
Loc: CA.
Not much, valve stems seals become hard like plastic, and often crack and fall apart. Aside from a thicker oil, a HM oil, or replacing the seals there isn't much you can do.

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#1598904 - 09/13/09 02:43 PM Re: what's good for leaking valve stem seal? [Re: ADFD1]
daves66nova Offline


Registered: 04/11/04
Posts: 3226
Loc: los angeles
a hm oil will help? does it soften the the stems?
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#1598906 - 09/13/09 02:45 PM Re: what's good for leaking valve stem seal? [Re: daves66nova]
Happy Birthday Colt45ws Offline


Registered: 08/15/06
Posts: 7668
Loc: Central Washington
It might. A big might. You could get lucky though. Might be worth a shot if you dont want to repair.
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#1598913 - 09/13/09 02:50 PM Re: what's good for leaking valve stem seal? [Re: Colt45ws]
Quest Offline


Registered: 12/19/04
Posts: 6869
Loc: beaver land EH?
In addition to Onmo's suggestion, my take is that: "nothing can fix a valve stem seal leak unless you replace them, period".
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#1598933 - 09/13/09 03:06 PM Re: what's good for leaking valve stem seal? [Re: Quest]
StevieC Offline


Registered: 08/21/08
Posts: 14339
Loc: Niagara Falls, ON, CA (near)
Not much will fix valve stem seals except replacement. HM oil and/or a thicker grade might be all that you can do.

frown
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#1598947 - 09/13/09 03:19 PM Re: what's good for leaking valve stem seal? [Re: StevieC]
bmwtechguy Offline


Registered: 06/15/04
Posts: 2534
Loc: South Carolina
Originally Posted By: StevieC
Not much will fix valve stem seals except replacement. HM oil and/or a thicker grade might be all that you can do.

frown


Maxlife 10W-40 has done the best for me with this type of issue. It is readily available in most places and on sale often or about $14 for 5 qt jug at WM.

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#1598955 - 09/13/09 03:25 PM Re: what's good for leaking valve stem seal? [Re: StevieC]
greenaccord02 Offline


Registered: 04/22/07
Posts: 5215
Loc: Houston, Tx, USA
Well, everybody else pretty much said it, but I'd at least give a HM oil a try before bringing it for repair. You just never know.
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  2. '97 Accord F22-B1 - M1 5W-30 - Bosch 3312
  3. '99 Camry 1MZ-FE - PP 5W-30 - M1-209

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#1598970 - 09/13/09 03:37 PM Re: what's good for leaking valve stem seal? [Re: greenaccord02]
noi8u Offline


Registered: 09/02/09
Posts: 78
Loc: Witch City, Salem, MA, USA
I see all the recommendations for a High Mileage Motor Oil. Are the additives really that good? The only pure synthetic HM oil I've seen is Mobil 1 and Valvoline Max Life. I wonder if the formula is any good since the M1is not SM certified and the 5w30 has a higher viscosity index than the 10w30or40 for both! Then I have to wonder why Mobil or Valvoline don't make a popular engine additive separately?

http://www.mobil.com/USA-English/Lubes/PDS/NAXXENPVLMOMobil_1_High_Mileage_Oil.asp


Edited by noi8u (09/13/09 03:48 PM)

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#1599056 - 09/13/09 05:32 PM Re: what's good for leaking valve stem seal? [Re: noi8u]
MONKEYMAN Offline


Registered: 06/24/04
Posts: 1574
Loc: St. Louis
I have some Maxlife engine protector bought at Big Lots. Looks like Valvoline does not make it anymore. I guess it was not that popular.
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#1599093 - 09/13/09 06:31 PM Re: what's good for leaking valve stem seal? [Re: MONKEYMAN]
94MaxGXE Offline


Registered: 05/18/03
Posts: 301
Loc: SE Michigan
Maxlife 5w30 completely stopped the same smoking at startup in my 99 Camry 4cyl.
It took about 10,000 miles.
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#1601240 - 09/15/09 04:44 PM Re: what's good for leaking valve stem seal? [Re: 94MaxGXE]
noi8u Offline


Registered: 09/02/09
Posts: 78
Loc: Witch City, Salem, MA, USA
Originally Posted By: 94MaxGXE
Maxlife 5w30 completely stopped the same smoking at startup in my 99 Camry 4cyl.
It took about 10,000 miles.


Now that's good intel.

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#1601433 - 09/15/09 07:57 PM Re: what's good for leaking valve stem seal? [Re: noi8u]
Nickdfresh Offline


Registered: 03/15/06
Posts: 3837
Loc: Buffalo, NY
Valvoline designed MaxLife specifically for valve stem seals...

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#1601585 - 09/15/09 09:45 PM Re: what's good for leaking valve stem seal? [Re: Nickdfresh]
tom slick Offline


Registered: 05/26/03
Posts: 8757
Loc: Central Coast, Calif.
I wonder what they use in Maxlife to "restore" valve stem seals. Viton is tough stuff and almost chemical proof. From my understanding you'd destroy it with any chemicals that would "soften" or "condition" it.
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#1603555 - 09/17/09 11:16 PM Re: what's good for leaking valve stem seal? [Re: MONKEYMAN]
bmwtechguy Offline


Registered: 06/15/04
Posts: 2534
Loc: South Carolina
SM oil is not always an indicator of the better quality oil for a particular application. SL sometimes means that a particular oil, such as M1 HM, simply has an older, higher (better) level of anti-wear additives such as ZDDP, which was limited even more for the newer SM oils of certain viscosities.

If an engine is leaking, common sense tells me to stay away from more expensive synthetics and use one of the HM blends, at least until the leak stops. Maxlife blend works great here. It works way better than some of the common stop leak additives, in my experience. I have less experience with the other HM oil brands.

Also, not all valve stem seals are made of Viton.


Edited by bmwtechguy (09/17/09 11:17 PM)

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