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what's good for leaking valve stem seal? #1598889
09/13/09 02:35 PM
09/13/09 02:35 PM
Joined: Apr 2004
Posts: 3,692
los angeles
daves66nova Offline OP
daves66nova  Offline OP

Joined: Apr 2004
Posts: 3,692
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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Re: what's good for leaking valve stem seal? [Re: daves66nova] #1598899
09/13/09 02:40 PM
09/13/09 02:40 PM
Joined: Apr 2009
Posts: 1,714
CA.
ADFD1 Offline
ADFD1  Offline

Joined: Apr 2009
Posts: 1,714
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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Re: what's good for leaking valve stem seal? [Re: ADFD1] #1598904
09/13/09 02:43 PM
09/13/09 02:43 PM
Joined: Apr 2004
Posts: 3,692
los angeles
daves66nova Offline OP
daves66nova  Offline OP

Joined: Apr 2004
Posts: 3,692
los angeles
a hm oil will help? does it soften the the stems?


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Re: what's good for leaking valve stem seal? [Re: daves66nova] #1598906
09/13/09 02:45 PM
09/13/09 02:45 PM
Joined: Aug 2006
Posts: 10,015
Central Washington
Colt45ws Offline
Colt45ws  Offline

Joined: Aug 2006
Posts: 10,015
Central Washington
It might. A big might. You could get lucky though. Might be worth a shot if you dont want to repair.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 86k
Pennzoil Conv HM 5W30, Fram XG2
Re: what's good for leaking valve stem seal? [Re: Colt45ws] #1598913
09/13/09 02:50 PM
09/13/09 02:50 PM
Joined: Dec 2004
Posts: 7,403
beaver land EH?
Quest Offline
Quest  Offline

Joined: Dec 2004
Posts: 7,403
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".


"Internet discussion boards act as echo chambers for conspiracy dittoheads" A.Allen
Re: what's good for leaking valve stem seal? [Re: Quest] #1598933
09/13/09 03:06 PM
09/13/09 03:06 PM
Joined: Aug 2008
Posts: 25,014
ON, Canada eh?
StevieC Offline
StevieC  Offline

Joined: Aug 2008
Posts: 25,014
ON, Canada eh?
Not much will fix valve stem seals except replacement. HM oil and/or a thicker grade might be all that you can do.

frown


'18 Caravan - 36k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: what's good for leaking valve stem seal? [Re: StevieC] #1598947
09/13/09 03:19 PM
09/13/09 03:19 PM
Joined: Jun 2004
Posts: 2,687
South Carolina
bmwtechguy Offline
bmwtechguy  Offline

Joined: Jun 2004
Posts: 2,687
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.

Re: what's good for leaking valve stem seal? [Re: StevieC] #1598955
09/13/09 03:25 PM
09/13/09 03:25 PM
Joined: Apr 2007
Posts: 5,215
Houston, Tx, USA
greenaccord02 Offline
greenaccord02  Offline

Joined: Apr 2007
Posts: 5,215
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.


  1. '95 Dakota 3.9L - M1 0W-40 - MC FL1A
  2. '97 Accord F22-B1 - M1 5W-30 - Bosch 3312
  3. '99 Camry 1MZ-FE - PP 5W-30 - M1-209
Re: what's good for leaking valve stem seal? [Re: greenaccord02] #1598970
09/13/09 03:37 PM
09/13/09 03:37 PM
Joined: Sep 2009
Posts: 78
Witch City, Salem, MA, USA
noi8u Offline
noi8u  Offline

Joined: Sep 2009
Posts: 78
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

Last edited by noi8u; 09/13/09 03:48 PM.
Re: what's good for leaking valve stem seal? [Re: noi8u] #1599056
09/13/09 05:32 PM
09/13/09 05:32 PM
Joined: Jun 2004
Posts: 2,643
St. Louis
MONKEYMAN Offline
MONKEYMAN  Offline

Joined: Jun 2004
Posts: 2,643
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.


Truth alone triumphs, not untruth.

2017 Elantra SE
Re: what's good for leaking valve stem seal? [Re: MONKEYMAN] #1599093
09/13/09 06:31 PM
09/13/09 06:31 PM
Joined: May 2003
Posts: 301
SE Michigan
94MaxGXE Offline
94MaxGXE  Offline

Joined: May 2003
Posts: 301
SE Michigan
Maxlife 5w30 completely stopped the same smoking at startup in my 99 Camry 4cyl.
It took about 10,000 miles.


99 Camry 144K SOLD
07 Accord 130K Miles
08 MazdaSpeed3 44K PP
10 Subaru Outback Gone
10 Mazda3s 95K
94 Nissan MaximaGXE 125K Sold
2012 Equinox 58K Gone
2016 Honda CR-V
Re: what's good for leaking valve stem seal? [Re: 94MaxGXE] #1601240
09/15/09 04:44 PM
09/15/09 04:44 PM
Joined: Sep 2009
Posts: 78
Witch City, Salem, MA, USA
noi8u Offline
noi8u  Offline

Joined: Sep 2009
Posts: 78
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.

Re: what's good for leaking valve stem seal? [Re: noi8u] #1601433
09/15/09 07:57 PM
09/15/09 07:57 PM
Joined: Mar 2006
Posts: 6,134
Buffalo, NY
Nickdfresh Offline
Nickdfresh  Offline

Joined: Mar 2006
Posts: 6,134
Buffalo, NY
Valvoline designed MaxLife specifically for valve stem seals...

Re: what's good for leaking valve stem seal? [Re: Nickdfresh] #1601585
09/15/09 09:45 PM
09/15/09 09:45 PM
Joined: May 2003
Posts: 9,431
Central Coast, Calif.
tom slick Offline
tom slick  Offline

Joined: May 2003
Posts: 9,431
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.


You get what you pay for...
So keep in mind how much you paid for this advice.
Re: what's good for leaking valve stem seal? [Re: MONKEYMAN] #1603555
09/17/09 11:16 PM
09/17/09 11:16 PM
Joined: Jun 2004
Posts: 2,687
South Carolina
bmwtechguy Offline
bmwtechguy  Offline

Joined: Jun 2004
Posts: 2,687
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.

Last edited by bmwtechguy; 09/17/09 11:17 PM.
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