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#4622881 - 01/03/18 03:42 PM 1 time use of HM oil
Whimsey Offline


Registered: 12/22/02
Posts: 4047
Loc: The Garden State
I have 6 quarts of Mobil 1 10W-30 HM oil that I'd like to use in our 2017 2.3 EcoBoost Explorer, because I have it left over. This oil has a 3.5 HTHS and a ACEA rating of A3/B3 I believe. Which sounds perfect for a 4 cylinder DI Turbo engine. This would be a 1 time use for this summers trip to FL from NJ., lots of HOT high speed driving. I know what the manual says, and I've been doing even better. But my question is will a one time use of Mobil 1 HM oil cause swelled seals that will leak if I go back to the regular Mobil 1 5W-30. I know what Pat Goss said, yes it will. I tried to email Mobil's email tech address and it was not working. I called the number on the site and I think I got the cafeteria as nobody new anything about oil shrug . I'm just looking to see if a one time use of HM oil causes irreversible damage to the engine seals, that's all, thanks.

Whimsey

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#4622888 - 01/03/18 03:48 PM Re: 1 time use of HM oil [Re: Whimsey]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Whimsey
But my question is will a one time use of Mobil 1 HM oil cause swelled seals that will leak if I go back to the regular Mobil 1 5W-30?


From everything I have read on this forum, the simple answer is NO.
_________________________
"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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#4622895 - 01/03/18 03:53 PM Re: 1 time use of HM oil [Re: Whimsey]
tig1 Offline


Registered: 01/03/09
Posts: 13655
Loc: Illinois
Probably OK but try 1-800-ask-mobil. They are normally very helpful.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4622900 - 01/03/18 03:56 PM Re: 1 time use of HM oil [Re: Whimsey]
ZZman Offline


Registered: 03/17/08
Posts: 5765
Loc: Michigan
I wouldn't think it would affect your seals at all being they should still be in good shape.
_________________________
2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40

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#4622917 - 01/03/18 04:16 PM Re: 1 time use of HM oil [Re: Whimsey]
EdwardC Offline


Registered: 11/14/13
Posts: 1862
Loc: Chicago, IL
I can't say for your vehicle specifically, but I've used the HM version periodically when the normal 5W30 or 0W30 AFE was out of stock at Walmart, went back to the non-HM after that and no leaks. If you're really worried (I wouldn't be), use it up slowly in your lawn mower, or 1 qt at a time with each change on the Explorer.

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#4622931 - 01/03/18 04:37 PM Re: 1 time use of HM oil [Re: Whimsey]
Mackelroy Offline


Registered: 12/03/04
Posts: 1006
Loc: Florida /Texas
If you run HM oil, and the soften seals start leaking (its really 50/50) whether seal swell agents actually cause a leak. If you weren't already leaking .

Seal swell agents will soften and swell any seals, they touch. It wont hurt to go back to normal oil though, what ever damage will already have been done..

IMO , don't even run a seal swell agent unless , you are trying to fix a leak.

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#4622933 - 01/03/18 04:38 PM Re: 1 time use of HM oil [Re: Whimsey]
SR5 Offline


Registered: 07/07/15
Posts: 4455
Loc: Down Under
You should be fine.
_________________________
Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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#4622936 - 01/03/18 04:40 PM Re: 1 time use of HM oil [Re: Whimsey]
BrocLuno Offline


Registered: 09/06/15
Posts: 5502
Loc: Kalifornia Kollective
Those seals are so new, it won't do anything. They have to have lost plasticizers before the additives start to do much. Yours will just shrug it off and cruise on smile
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4622943 - 01/03/18 04:53 PM Re: 1 time use of HM oil [Re: Whimsey]
SR5 Offline


Registered: 07/07/15
Posts: 4455
Loc: Down Under
And if your modern seals are made of Viton (fluoroplymer) then it won't make a fig of difference either way, new (hurting) or old (helping) as Viton is very chemically stable.
_________________________
Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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#4623058 - 01/03/18 06:56 PM Re: 1 time use of HM oil [Re: Whimsey]
Astro_Guy Offline


Registered: 07/30/15
Posts: 443
Loc: Pennsylvania
If in doubt, that M1 10w30 HM would be a great solution for all of you outdoor power equipment needs.
_________________________
'01 Volvo V70XC, 224k, 0w40 M1
'16 Accord, 10k, soon to be 0w20 M1 EP

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#4623121 - 01/03/18 08:05 PM Re: 1 time use of HM oil [Re: Whimsey]
sleepery Offline


Registered: 06/19/09
Posts: 253
Loc: NY
I use Valvoline HM Synthetic once per year as my winter oil and go back to conventional for the rest of the year and have had no problems with leaks or consumption in a 99 Explorer .

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#4623185 - 01/03/18 09:35 PM Re: 1 time use of HM oil [Re: Whimsey]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1654
Loc: Crawfordville FL
It won't hurt it. Great choice for that motor.
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4623235 - 01/03/18 10:19 PM Re: 1 time use of HM oil [Re: SilverFusion2010]
bbhero Online   content


Registered: 03/20/15
Posts: 4608
Loc: Virginia
^^^^^

I agree with SilverFusion.

And Whimsey get ready for a big whomping storm especially if you are near the Atlantic coast.


Edited by bbhero (01/03/18 10:20 PM)
_________________________
Nissan Altima 3.5 Coupe Valvoline Advanced Full Synthetic 5w30 Federated Auto 4612ex
"Treat your family like your friends and treat your friends like your family."

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#4623240 - 01/03/18 10:24 PM Re: 1 time use of HM oil [Re: bbhero]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
Originally Posted By: bbhero
^^^^^

I agree with SilverFusion.

And Whimsey get ready for a big whomping storm especially if you are near the Atlantic coast.


Poor atlantic maritime region. They take the brunt of it, all the time. The storm you're talking about is being called a "Cyclone bomb" what a ridiculous time to live, where the weather is drunk af and the descriptors are more and more war-related...just a week ago they had to deal with hurricane force winds---- in the absence of a hurricane.

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#4623245 - 01/03/18 10:33 PM Re: 1 time use of HM oil [Re: SilverFusion2010]
4ever4d Offline


Registered: 01/02/10
Posts: 953
Loc: North Carolina
Originally Posted By: SilverFusion2010
It won't hurt it. Great choice for that motor.

+1 And i will add that continued use will not cause harm to or cause seal leaks. HM oils do not contain seal sweller's but rather seal conditioners. Causing a seal to "swell" would be a sure fire way to break it down and cause leaks. Conditioners keep seals pliable and therefore in good shape longer.
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04 Chevy Colorado 3.5 I5 5w-30 OEF
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