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#4563271 - 11/03/17 06:59 PM Which high mileage oil has the most seal swelling?
HKPolice Online   content


Registered: 03/31/12
Posts: 510
Loc: Toronto, Canada
1MZ-FE Camry just started to leak oil from the valve cover which is a common issue. Willing to give HM oil a chance, which brand has the most seal swelling additives? I'm partial to M1 but will buy whatever has the highest chance of stopping the leak.

Thanks for your inputs!

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#4563273 - 11/03/17 07:01 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
LaCocina27 Offline


Registered: 10/29/17
Posts: 87
Loc: America
I always liked Valvoline MaxLife. That's a really spectacular high mileage oil.

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#4563283 - 11/03/17 07:05 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
ammolab Offline


Registered: 01/16/06
Posts: 996
Loc: Ruidoso, NM USA
I have found the HM oils good on tired front or rear main seals...not so good at valve cover gasket leaks.

I change them.
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#4563284 - 11/03/17 07:06 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
IF your engine is the V6 and it's the back VC then HM oil will not work for you. My grandsons 2002 Camry had to have the VC gasket replaced twice which is a real pain. He tried everything . No dice.
_________________________
2007 Ford Fusion 227,000 miles
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10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
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#4563287 - 11/03/17 07:09 PM Re: Which high mileage oil has the most seal swelling? [Re: tig1]
LaCocina27 Offline


Registered: 10/29/17
Posts: 87
Loc: America
Originally Posted By: tig1
IF your engine is the V6 and it's the back VC then HM oil will not work for you. My grandsons 2002 Camry had to have the VC gasket replaced twice which is a real pain. He tried everything . No dice.


What about Mobil 1 HM? Will that work?

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#4563289 - 11/03/17 07:11 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
ST2008 Offline


Registered: 07/18/16
Posts: 119
Loc: Canada
If I were you, I would replace the valve cover gasket. It's very easy to replace it and the gasket is very cheap. You can find lot of DYI video in Youtube.

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#4563297 - 11/03/17 07:21 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I don't think the HM seal swellers have any effect on silicone seals. I think they have to be rubber. The auto industry has been slowly moving away from rubber seals.

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#4563298 - 11/03/17 07:22 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
WillsYoda Offline


Registered: 10/17/15
Posts: 471
Loc: MN
I have the same engine. In winter M1 HM 5w30, and in summer Maxlife.

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#4563299 - 11/03/17 07:23 PM Re: Which high mileage oil has the most seal swelling? [Re: ST2008]
SilverSnake Offline


Registered: 05/29/13
Posts: 592
Loc: Florida
Originally Posted By: ST2008
If I were you, I would replace the valve cover gasket. It's very easy to replace it and the gasket is very cheap. You can find lot of DYI video in Youtube.


This ^
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#4563306 - 11/03/17 07:26 PM Re: Which high mileage oil has the most seal swelling? [Re: SilverSnake]
The Critic Offline


Registered: 08/30/04
Posts: 19809
Loc: CA
Originally Posted By: SilverSnake
Originally Posted By: ST2008
If I were you, I would replace the valve cover gasket. It's very easy to replace it and the gasket is very cheap. You can find lot of DYI video in Youtube.


This ^


It is a 4hr job to replace the valve cover gaskets on both banks. The rear valve cover requires removing the manifold and moving the engine wiring harness a bit. Not a easy job by any means.

I still encourage replacing the gaskets. No amount of seal swelling will fix this problem.
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#4563313 - 11/03/17 07:29 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
Mackelroy Offline


Registered: 12/03/04
Posts: 1006
Loc: Florida /Texas
Seal swell agents are 50/50 whether they make the issue worse. Be sure and come back with results

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#4563320 - 11/03/17 07:31 PM Re: Which high mileage oil has the most seal swelling? [Re: ST2008]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6177
Loc: USA
Originally Posted By: ST2008
If I were you, I would replace the valve cover gasket. It's very easy to replace it and the gasket is very cheap. You can find lot of DYI video in Youtube.


Are you kidding? The valve cover gaskets are almost IMPOSSIBLE to replace on the 1MZ and almost any transverse V6 mad LOL crzy no-no trolling liar stooges

If you do replace them, get either Beck/Arnley or Mahle/Victor Reinz. Either brand will be reboxed OEM gaskets. While you're back there, replace the spark plugs and wires. Get NGK wires, and Bosch Platinum Ir Fusion spark plugs. I know a lot of people don't like Bosch, but the 1MZ uses special 2-prong double plugs, and in a transverse V6 with no cutouts for the back plugs without complete disassembly, iridium is a MUST! And the only multi-prong iridium made for the 1MZ is the Bosch Platinum Ir Fusion (it has 4 prongs, which should be fine). Iridium should last at least 100k, whereas platinum is only good for 60k.

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#4563331 - 11/03/17 07:44 PM Re: Which high mileage oil has the most seal swelling? [Re: slacktide_bitog]
Mr Nice Offline


Registered: 09/12/04
Posts: 21206
Loc: Orlando, FL
Originally Posted By: slacktide_bitog
Originally Posted By: ST2008
If I were you, I would replace the valve cover gasket. It's very easy to replace it and the gasket is very cheap. You can find lot of DYI video in Youtube.


Are you kidding? The valve cover gaskets are almost IMPOSSIBLE to replace on the 1MZ and almost any transverse V6 mad LOL crzy no-no trolling liar stooges

If you do replace them, get either Beck/Arnley or Mahle/Victor Reinz. Either brand will be reboxed OEM gaskets. While you're back there, replace the spark plugs and wires. Get NGK wires, and Bosch Platinum Ir Fusion spark plugs. I know a lot of people don't like Bosch, but the 1MZ uses special 2-prong double plugs, and in a transverse V6 with no cutouts for the back plugs without complete disassembly, iridium is a MUST! And the only multi-prong iridium made for the 1MZ is the Bosch Platinum Ir Fusion (it has 4 prongs, which should be fine). Iridium should last at least 100k, whereas platinum is only good for 60k.


Better yet, don't buy a vehicle with that type of engine.

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#4563332 - 11/03/17 07:44 PM Re: Which high mileage oil has the most seal swelling? [Re: HKPolice]
buck91 Offline


Registered: 04/17/12
Posts: 2449
Loc: West Michigan
Did VC gaskets on a Olds Aurora (transverse V6). Wasn't stupidly easy but wasn't too hard, either. Worst part was sopping up the oil out of the spark plug wells first. Yes, it was leaking that bad.
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#4563337 - 11/03/17 07:50 PM Re: Which high mileage oil has the most seal swelling? [Re: Merkava_4]
Silk Offline


Registered: 07/26/03
Posts: 4566
Loc: New Zealand
Originally Posted By: Merkava_4
I don't think the HM seal swellers have any effect on silicone seals. I think they have to be rubber. The auto industry has been slowly moving away from rubber seals.


If you had rubber oil seals in your engine, the swelling would be impressive. They moved away from leather seals, but there was no rubber seals to move away from.
_________________________
1987 BMW R65 - Penrite V Twin 20/50
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.

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