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Seal Swell Testing Video #4548179
10/19/17 10:29 AM
10/19/17 10:29 AM
Joined: Oct 2011
Posts: 945
Toronto ON
Solarent Offline OP
Solarent  Offline OP
Joined: Oct 2011
Posts: 945
Toronto ON


I sometimes get asked how seal swell agents work and while doing some research on the topic, I came across this video from Lubrizol which shows how an oil's impact on seals is evaluated. The test shown here isn't the only one used, but it is one of the main ones.

Basically after being exposed to oil after a long period of time (a week at elevated temperature), the seal coupon is stretched to see if it has changed since new. High Mileage engine oils contain ingredients designed to soften older and harder elastomers and bring them back to similar levels of performance to new material using what is shown in these tests to evaluate the performance.

Hope you like the video as much as I did!

Re: Seal Swell Testing Video [Re: Solarent] #4548206
10/19/17 10:50 AM
10/19/17 10:50 AM
Joined: Aug 2008
Posts: 21,241
ON, Canada eh?
StevieC Online content
StevieC  Online Content
Joined: Aug 2008
Posts: 21,241
ON, Canada eh?
Thanks thumbsup


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Seal Swell Testing Video [Re: Solarent] #4548256
10/19/17 11:26 AM
10/19/17 11:26 AM
Joined: Apr 2012
Posts: 9,825
Kendall, FL
wemay Offline
wemay  Offline
Joined: Apr 2012
Posts: 9,825
Kendall, FL
Very nice! Thanks. Interesting that almost all brands now recommend their HM oils for new vehicles as well.


18 Sportage LX: M1AP 5W-20 + M1-104A
13 SFS 2.0T: PP 10W-30 + XG9688
Re: Seal Swell Testing Video [Re: Solarent] #4548381
10/19/17 01:28 PM
10/19/17 01:28 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
I can't see changing to a HM oil regardless of mileage if there are no apparent problems. What's working should be left alone. There are those that must really abuse their vehicles for there to be a suggestion that 75K miles equates to high mileage. My 03 V8 4Runner is at 165K+ miles with no indication of excessive oil consumption or seals leaking. That's more than double this 75K cutoff and this engine works hard for its living.

Re: Seal Swell Testing Video [Re: Solarent] #4548427
10/19/17 02:25 PM
10/19/17 02:25 PM
Joined: Jun 2005
Posts: 5,277
North Texas
ARB1977 Online content
ARB1977  Online Content
Joined: Jun 2005
Posts: 5,277
North Texas
Cool video. Makes me feel even better about HM oils.


2015 Tacoma 4.0L 60K (as of 02/23/18)
AMSOIL SS 0W30 / Toyota filter

2018 CRV 1.5L (as of 05/11/18)
Factory fill / Honda filter
Re: Seal Swell Testing Video [Re: Solarent] #4548477
10/19/17 03:28 PM
10/19/17 03:28 PM
Joined: Sep 2015
Posts: 3,938
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,938
Connecticut
My car only has 78K miles. But being 16 years old, so are the seals and gaskets. I'm going to start making the move to a HM oil next year. There is some oil weepage (no dripping).


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Seal Swell Testing Video [Re: Solarent] #4548536
10/19/17 04:37 PM
10/19/17 04:37 PM
Joined: Aug 2004
Posts: 309
San Diego
FlyPenFly Offline
FlyPenFly  Offline
Joined: Aug 2004
Posts: 309
San Diego
Are the active mechanisms in HM oil different than AT-205?

From what I recall, HM swells seals and if you stop using HM it goes back to original. With AT-205 it's an additive product that restores material onto seals?


2014 Mercedes GLK350 3.5L DFI
2014 Mercedes E350 Coupe 3.5L DFI
2007 Suzuki Grand Vitara 2.7L V6
Re: Seal Swell Testing Video [Re: Solarent] #4549194
10/20/17 10:45 AM
10/20/17 10:45 AM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
Once softened, they may slowly go back as you use non-HM oils, but it is not an over night process ...

But once you need HM oils, why go back?


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Seal Swell Testing Video [Re: Solarent] #4549310
10/20/17 01:19 PM
10/20/17 01:19 PM
Joined: Jul 2017
Posts: 119
Sauk Valley, IL
EricBeau Offline
EricBeau  Offline
Joined: Jul 2017
Posts: 119
Sauk Valley, IL
Very interesting. Iíve got some PPHM 0W-20 about to go in my Odyssey, and I have MaxLife 5W-30 in my Camry. Both are are high mileage vehicles and I like the idea of HM oils. Iíll stick with them going forward.


2001 Toyota Camry LE 4cyl.
Quaker State High Mileage 5W-30 and FRAM PH4967

2010 Honda Odyssey LX
Mobil 1 High Mileage 0W-20 and FRAM TG7317

Ford Service Advisor

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