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Re: what's good for leaking valve stem seal? [Re: bmwtechguy] #1605425 09/20/09 01:13 AM
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94MaxGXE Offline
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Condition the valve seal, hopefully, clean it up, yes. Whatever, it works for me. MaxLife blend & full syn are at the top of my best HM oil list.


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] #1877027 05/01/10 07:32 AM
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buster Offline
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I always thought it was marketing, but I have found out that they do in fact use a specific chemistry for seals, and apparently it does work.


2019 Nissan Frontier Pro 4X
2019 Subaru Impreza Sport
Re: what's good for leaking valve stem seal? [Re: buster] #1877039 05/01/10 07:55 AM
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SteveSRT8 Offline
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IF that's the problem.

A few other things can cause a bit of smoke at start up.

Does the car smoke when you take off after idling for a while?
How about at high rpm/high load?
Compression? Leak down test? Hows the PCV? Is the intake full of oil?

Sure there's no harm in playing with the oil, but it can't fix everything.


"In a democracy, dissent is an act of faith."
J. William Fulbright
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Re: what's good for leaking valve stem seal? [Re: SteveSRT8] #1877061 05/01/10 08:20 AM
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demarpaint Offline
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A HM oil might help. Typically I've seen in older cars the valves stem seals become brittle and hard as plastic. These can actually crack and break. If that is the case all bets are off with HM oils. Then the next plan of attack, (other than proper repair) would be a thicker oil, or something along the lines of STP, or Schaeffers #132. #132 is a great product especially in older engines, or engines that use oil. JMO


God Bless Our Troops

Re: what's good for leaking valve stem seal? [Re: daves66nova] #1877103 05/01/10 09:23 AM
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Trav Offline
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Check the drain back holes in the head,make sure they are clear and the oil isn't puddling.Also check the PCV.

Too much is made of valve seals they actually do very little as far as oil control goes in some engines (old big block Buick engines only used a skinny o ring type on the intake valves,none on the exhaust the intake only sealed when the valve was in the down position).

You may well have sticky rings,the heat of the cat as it warms could be burning it off.


ASE L1, Master. Deutsch Meisterbrief.
Re: what's good for leaking valve stem seal? [Re: Trav] #1879485 05/03/10 03:11 PM
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Kaboomba Offline
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Originally Posted By: Trav
Check the drain back holes in the head,make sure they are clear and the oil isn't puddling.


That's a very interesting thought. Valve stem seal leakage isn't a real problem, per se, except that it makes a little mess when you have to burn off some oil on startup.

So, if all passages are clean and there is minimal opportunity for oil to get past the seals, maybe the actual seal problem is liveable?

Last edited by Kaboomba; 05/03/10 03:11 PM.

Kaboomba

94 Buick Park Ave 108K miles, aging gracefully though totalled!
95 Merc Sable 92K miles, raised from the dead by me


Re: what's good for leaking valve stem seal? [Re: Kaboomba] #1880558 05/04/10 02:08 PM
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Trav Offline
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Sure its something you can live with in a engine that vintage,i wouldn't mess with the seals but i might give MMO a shot for a full OCI.
You may find it cleans the rings and insides up a little,you may find its helps.For under 5 bucks its worth a try IMO.


ASE L1, Master. Deutsch Meisterbrief.
Re: what's good for leaking valve stem seal? [Re: Trav] #1880640 05/04/10 03:18 PM
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Quest Offline
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replace all the valve stem seals is the only way to go.

While you are at it, check all the valve guides inner bore for wear also.

Q.


"Internet discussion boards act as echo chambers for conspiracy dittoheads" A.Allen
Re: what's good for leaking valve stem seal? [Re: Quest] #1880691 05/04/10 03:58 PM
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Trav Offline
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Just my opinion but doing seals on a 95 can get awful expensive and if its a V6 turn into a monster of a job.
Unless the car in question ia an exotic or pristine example it seems that pulling the head(s) to do valve guides on a 95 Camry is a bit over the top.

Toyota engines in these cars may be prone to sludge issues hence the recommendation to check the PCV and drain holes.
Toyota engines are not prone to stem seal failure.I would want to know 100% before diving into that project if i were to attempt it.


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Re: what's good for leaking valve stem seal? [Re: bmwtechguy] #1884642 05/08/10 06:02 PM
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hardcore302 Offline
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i would try a thicker hm oil first with some sort of stop smoke additive. worth a shot, no?


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2015 Dodge Journey Crossroad - Fram ocod filter, Mobil
Re: what's good for leaking valve stem seal? [Re: tom slick] #5090516 04/29/19 12:04 PM
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dilberto88 Offline
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Originally Posted by tom slick
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.


Liqui Moly makes a Viton seal conditioner(Motor Oil Saver 2020) that is designed to restore the nitrile "backbones" of flouro elastomeric type seals, like Viton.... characterized by the neon green, alien rainbow colors....


2006 Porsche Cayenne Turbo
Re: what's good for leaking valve stem seal? [Re: dilberto88] #5090540 04/29/19 12:24 PM
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I doubt it matters now.


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Re: what's good for leaking valve stem seal? [Re: dilberto88] #5090608 04/29/19 01:23 PM
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OVERKILL Offline
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Originally Posted by dilberto88
Originally Posted by tom slick
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.


Liqui Moly makes a Viton seal conditioner(Motor Oil Saver 2020) that is designed to restore the nitrile "backbones" of flouro elastomeric type seals, like Viton.... characterized by the neon green, alien rainbow colors....


9 year old thread revival alert!

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Re: what's good for leaking valve stem seal? [Re: daves66nova] #5093769 05/02/19 12:28 PM
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flubber in solution

crzy


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Re: what's good for leaking valve stem seal? [Re: daves66nova] #5100591 05/09/19 02:02 PM
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My dads 03 durango was burning oil pretty decent. It has 220K 4.7L. We tried a bottle of stop leak and it worked pretty well.
https://motorkote.com/products/motorkote-all-seal-stop-leak-8-oz


1998 Dodge Neon-Rebuilt 2.4L-Schaeffer 10w-30
2014 Dodge Durango 3.6, 66K- Schaeffer 10w-30
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