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#4466431 - 07/21/17 05:13 PM Blown Oil Seal After Converting Back From HM Oil
Astro_Guy Offline


Registered: 07/30/15
Posts: 444
Loc: Pennsylvania
This is probably just a coincidence, but my Volvo blew the main crankshaft seal while driving in the mountains of West Virginia fully loaded at high speeds. If memory serves me, I started using Mobil 1 5w30 HM at about 160K. Later I swithced to Mobil 1 0w40 at around 190K. The PCV valve was changed out within the last 6 months, so that isn't likely to be the cause.

Oil consumption was nil over a 5K OCI with high mileage oil. It reached one quart over 7900 miles on the last OCI with the 0w40. It was also down 1/2 quart at 6K miles on this oil, without hot weather or towing. It dropped another 1/4 quart after 600 miles of hot weather towing last month.

Is this just a coincidence? Should I revert back to a high mileage oil?
_________________________
'01 Volvo V70XC, 225k, 0w40 M1
'16 Accord, 11k, soon to be 0w20 M1 EP

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#4466449 - 07/21/17 05:28 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
Vladiator Offline


Registered: 01/04/16
Posts: 728
Loc: NC
Originally Posted By: Astro_Guy
driving in the mountains of West Virginia fully loaded at high speeds.

Something tells me that the oil is not the one to blame here... High Mileage cars tend to blow seals in "Spirited driving" conditions. Just a coincidence, in my opinion.
_________________________
Thicker oils give protection for severe operations such as driving in mountains, pulling a boat, dusty conditions, short trips, high rpm, overloading, overheating and overcooling. Thin oils give MPG.

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#4466481 - 07/21/17 06:01 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
JMJNet Offline


Registered: 09/06/07
Posts: 934
Loc: TX, USA
Originally Posted By: Astro_Guy
.. while driving in the mountains of West Virginia fully loaded at high speeds.


This is why???
_________________________
  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel



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#4466509 - 07/21/17 06:26 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
demarpaint Offline


Registered: 07/03/05
Posts: 29809
Loc: NY
160K? Working the engine? I'd say it had nothing to do with the oil, just bad luck.
_________________________
God Bless Our Troops


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#4466537 - 07/21/17 06:55 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
Linctex Offline


Registered: 12/31/16
Posts: 6178
Loc: Waco, TX
Originally Posted By: Astro_Guy
I switched to Mobil 1 0w40 at around 190K.


I think it was just it's time.

190,000++ miles and things like that just might start happening.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4466551 - 07/21/17 07:04 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
dlundblad Offline


Registered: 09/30/13
Posts: 10061
Loc: Indiana
I know you said your PCV was replaced. I am assuming you mean oil trap? Where the passages clear as well?

There's a guy on the XC70 forum that lost his seals while driving up some mountains. Heck, that may have been you? shrug


Edited by dlundblad (07/21/17 07:05 PM)
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4466644 - 07/21/17 08:33 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: dlundblad]
Astro_Guy Offline


Registered: 07/30/15
Posts: 444
Loc: Pennsylvania
This car turned over 214,000 miles just prior to the failure. A month prior it was towing nearly 1000 pounds in a 5x8 U-Haul in the mountains of PA at similarly high speeds. I just tossed this out there for sake of discussion.

Oil use did seem to go up significantly after switching to 0w40. Should the repairs prove economically viable, I will most likely go back to a 5w30 High Mileage.

Last but not least, I am not the guy in the XC70 forum, but may look him up. Astro_14, wherefore art thou?
_________________________
'01 Volvo V70XC, 225k, 0w40 M1
'16 Accord, 11k, soon to be 0w20 M1 EP

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#4466678 - 07/21/17 09:01 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
At that age, with those miles, it was bound to happen sooner or later, especially with that kind of use profile. That motor lives a hard life under your tutelage. Might as well take care of its seals.
I haven't seen Astro14 in a while. He might be at work on a rotation to some distant land for the moment.
Finally, I must be 14 or something. Regarding the phrasing 'blown seal' - I just can't even. lol
_________________________
too many cars and oil combinations to list in 150 characters or less

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#4466700 - 07/21/17 09:19 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1665
Loc: Crawfordville FL
Now that's an image I won't soon forget
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4466892 - 07/22/17 07:23 AM Re: Blown Oil Seal After Converting Back From HM Oil [Re: L_Sludger]
Astro_Guy Offline


Registered: 07/30/15
Posts: 444
Loc: Pennsylvania
Originally Posted By: L_Sludger
Finally, I must be 14 or something. Regarding the phrasing 'blown seal' - I just can't even. lol


See https://www.youtube.com/watch?v=_j0JGkqS2Ps
_________________________
'01 Volvo V70XC, 225k, 0w40 M1
'16 Accord, 11k, soon to be 0w20 M1 EP

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#4467228 - 07/22/17 03:07 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
dlundblad Offline


Registered: 09/30/13
Posts: 10061
Loc: Indiana
Originally Posted By: Astro_Guy
This car turned over 214,000 miles just prior to the failure. A month prior it was towing nearly 1000 pounds in a 5x8 U-Haul in the mountains of PA at similarly high speeds. I just tossed this out there for sake of discussion.

Oil use did seem to go up significantly after switching to 0w40. Should the repairs prove economically viable, I will most likely go back to a 5w30 High Mileage.

Last but not least, I am not the guy in the XC70 forum, but may look him up. Astro_14, wherefore art thou?


When seals go, they really go without warning you about the catastrophic failure.

So you're sure your PCV passages and components are good?
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4467279 - 07/22/17 04:57 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
wrcsixeight Offline


Registered: 10/15/10
Posts: 1731
Loc: california


Had to go there
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LA 318 Roller Cam
M1 0w-40
Fram ultra XG8A
Fram Ultra XG16 on remote transmission filter mount

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#4467388 - 07/22/17 07:00 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
Originally Posted By: SilverFusion2010
Now that's an image I won't soon forget



_________________________
too many cars and oil combinations to list in 150 characters or less

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#4467468 - 07/22/17 08:22 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: Astro_Guy]
fdcg27 Offline


Registered: 09/25/09
Posts: 15730
Loc: OH
You don't typically see a RMS "blow".
They usually start to leak a bit and gradually leak more over time and miles.
The oils you've used have nothing to do with this failure nor does the PCV system.
Replacement is straightforward but does involve a lot of disassembly and then reassembly.
If you're up for the work, fix it. If not, it's time for this old Volvo to go to the yard of no return.
After sixteen years and 214K, it's not as though it owes you anything.
You can buy a better one for cheap since these cars have limited resale value.
_________________________
17 Forester 12K MSS 0W-20
12 Accord LX 86K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

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#4469488 - 07/24/17 10:46 PM Re: Blown Oil Seal After Converting Back From HM Oil [Re: fdcg27]
amargill19 Offline


Registered: 07/05/17
Posts: 21
Loc: BC, Canada
With these whiteblock engines, a neglected PCV system will cause oil leaks in all sorts of places, the RMS being the worst as far as repairs go.

I recently bought a car with nearly the same engine and it was very neglected in terms of maintenance, and shortly after replacing all of the PCV/oil breather components it sprung a leak at the rear cam seal, which at first glance I thought was the RMS. Luckily I caught it immediately and had it sorted day of with a new $10 seal.

OP, confirm that it's the RMS and not a rear cam seal. When the rear cam seal goes it will drip down from above and look like it's coming from the RMS. If it is the RMS switch back to HM and hope consumption decreases? Good luck.

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