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#2976497 - 04/18/13 08:27 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
OVERKILL Online   content


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
The only oil on the market that isn't Motorcraft that carries the Ford certification for this application is the Quaker State. So that's the oil I'd be seeking out to find. Using anything else may cause you warranty issues.
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#2976517 - 04/18/13 08:42 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
A_Harman Offline


Registered: 10/01/10
Posts: 3982
Loc: Michigan
MC 5w50 shears to a 40-weight quickly, and then to a 30-weight if you run it hard. The only real reason to run it is that it has low zddp, equivalent to API limits for 20 and 30-weights. If you want to protect your engine instead of your cats, run Redline 10w40.
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#2976523 - 04/18/13 08:46 AM Re: Need a 5W50 for 5.0 Coyote [Re: A_Harman]
OVERKILL Online   content


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Originally Posted By: A_Harman
MC 5w50 shears to a 40-weight quickly, and then to a 30-weight if you run it hard. The only real reason to run it is that it has low zddp, equivalent to API limits for 20 and 30-weights. If you want to protect your engine instead of your cats, run Redline 10w40.


The reason to run it is to retain his factory warranty. THIS is the reason the Euro marques had so many bloody problems in North America. "Run an approved lubricant? this is 'merica! I'll run whatever the [censored] I bloody well feel like!!!" smirk
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#2976536 - 04/18/13 08:59 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
Clevy Offline


Registered: 11/11/10
Posts: 6995
Loc: Saskatoon canada
We have the m1 5w-50 in canada,I happen to have a few quarts so I'm confident an a person can find it stateside pretty easily.
I would contact Mobil and ask them what their position as far as their 5w-50 used in a 5.0. I'm sure they have data on its use in that engine and if they told me its allowable I'd run it.
Since you already canned castrol that eliminates an easily found 5w-50 obtained at wal mart.
I've seen Quaker state ultimate durability in the 5w-50 flavour and i just saw just of 5w-50 at Canadian tire in their motomaster house brand. Although I don't know if motomaster is even obtainable where you are.
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#2976556 - 04/18/13 09:17 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
OVERKILL Online   content


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Owners manual for the 2013 Mustang:
http://www.motorcraftservice.com/pubs/content/~WODMUS/~MUS~LEN/42/13musom3e.pdf

Page 298

Originally Posted By: Ford
Engine oil with Track
Pack*

WSS-M2C931-B with API
Certification Mark


http://quakerstate.com/#/motor-oil/ultimate-durability

There is your approved lubricant that isn't Motorcraft.
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#2976654 - 04/18/13 10:14 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
threeputtpar Online   content


Registered: 08/04/11
Posts: 1451
Loc: Appleton, WI
https://www.fcsdchemicalsandlubricants.c...20Synthetic.pdf - Specs for the Motorcraft 5W-50.

http://www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140007513239_201302211620.pdf - Specs for the QSUD 5W-50.

Looks like the Motorcraft starts off very thick compared to the QS, but the QS has a better VI.

http://www.redlineoil.com/product.aspx?pid=135&pcid=21 - The Redline 5W-50 is just as thick as the Motorcraft at 100C, but I'm sure the HT/HS is much higher than MC. It will hold its viscosity over the OCI, whereas the MC probably won't. Use the MC or QS if you won't be tracking it at any time during the OCI, but if you will be tracking it go with the RL. You just won't be in compliance with your warranty.

Good luck finding either the QS or RL 5W-50. The one place that I can find RL locally carries the 5W-30, 10W30 and 20W-50 and won't special order anything else for me. I guess there's always Amazon if you order a case at a time.

I know you said that Castrol is a no go, but their 5W-50 is right between MC and QS at 100C and the VI is pretty good. It's on sale right now at AAP for $30 for 5 quarts and a Fram Ultra. You won't be able to beat that price with any of the other options available.


Edited by threeputtpar (04/18/13 10:17 AM)
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#2976721 - 04/18/13 11:01 AM Re: Need a 5W50 for 5.0 Coyote [Re: threeputtpar]
A_Harman Offline


Registered: 10/01/10
Posts: 3982
Loc: Michigan
Originally Posted By: threeputtpar
https://www.fcsdchemicalsandlubricants.c...20Synthetic.pdf - Specs for the Motorcraft 5W-50.

http://www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140007513239_201302211620.pdf - Specs for the QSUD 5W-50.

Looks like the Motorcraft starts off very thick compared to the QS, but the QS has a better VI.



It's too bad that the MC data sheet doesn't quote an HTHS value. The QSUD spec sheet quotes an HTHS of 3.98, which is significantly lower than M1 5w50's HTHS of 4.4. But the QSUD has Ford's approval for the Boss Coyote engine, so the HTHS spec must not be very challenging. Redline's 5w50 has an HTHS of 5.9, which is out of this world compared to the "approved" oils for the Boss. Which do you think would protect the engine better? Even RL's 10w40 has an HTHS of 4.7.


Edited by A_Harman (04/18/13 11:01 AM)
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#2976756 - 04/18/13 11:29 AM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
KenO Offline


Registered: 10/29/07
Posts: 1158
Loc: Auburn, GA
So, if you do have an issue - who is going to prove you used an incorrect oil? Is a UOA going to prove that?
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#2976762 - 04/18/13 11:38 AM Re: Need a 5W50 for 5.0 Coyote [Re: KenO]
OVERKILL Online   content


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Originally Posted By: KenO
So, if you do have an issue - who is going to prove you used an incorrect oil? Is a UOA going to prove that?


Ford and the other OEM's have more than enough resources to determine what lubricant is in the sump.

I don't know why it is so hard for some people to swallow the concept of warranty compliance. Do we honestly think we are smarter than the OEM's here? Are we that naive that we legitimately feel that by glancing at an oil's PDS that we know more than the manufacturer and what they gleaned through extensive tear-down testing?
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#2976772 - 04/18/13 11:46 AM Re: Need a 5W50 for 5.0 Coyote [Re: OVERKILL]
Danno Offline


Registered: 10/07/12
Posts: 722
Loc: Northern Ontario, Canada
Originally Posted By: OVERKILL
Originally Posted By: KenO
So, if you do have an issue - who is going to prove you used an incorrect oil? Is a UOA going to prove that?

I don't know why it is so hard for some people to swallow the concept of warranty compliance. Do we honestly think we are smarter than the OEM's here? Are we that naive that we legitimately feel that by glancing at an oil's PDS that we know more than the manufacturer and what they gleaned through extensive tear-down testing?


I spoke with the Ford engineer responsible for the Powerstroke engines. They test every aftermerket tuner, determine the failure modes and deny warranty based on their findings. ECMs store when they have had reflashes. OEMs know a lot more than we give them credit for.

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#2976784 - 04/18/13 12:02 PM Re: Need a 5W50 for 5.0 Coyote [Re: OVERKILL]
Garak Offline


Registered: 12/05/09
Posts: 10994
Loc: Regina, Saskatchewan, Canada
Originally Posted By: OVERKILL
Ford and the other OEM's have more than enough resources to determine what lubricant is in the sump.

And besides, they can ask for receipts. wink

I didn't realize the QS 5w-50 is now approved, which is semi-good news for my buddy with the GT500. Now, for the other side of the good news/bad news equation. Have you seen QS 5w-50 up here yet? I haven't looked, and usually, if I need an oddball grade, I go to Castrol, since they offer every grade one can imagine plus the kitchen sink.
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#2976806 - 04/18/13 12:18 PM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
aquariuscsm Offline


Registered: 12/30/06
Posts: 9408
Loc: South Texas,USA
Oil changes are free during the warranty period anyway,right? If so,I'd just use MC 5W50 till the warranty is up,then switch to you favorite brand.
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#2976859 - 04/18/13 12:56 PM Re: Need a 5W50 for 5.0 Coyote [Re: aquariuscsm]
Ddub Offline


Registered: 05/13/10
Posts: 123
Loc: TX
Just speculation here, but everyone seems to agree that the engine in the GT and and the GT with Track Pack are virutually identical, yet the former recommends a 5w-20 and the latter a 5W-50. Everyone also seems to agree (and you have to guess that Ford knows this) that the MC 5W-50 shears fairly rapidly. Could it be that this engine could get by just fine on the 5W-20, but that Ford suspects the Track Pack cars will get beat on a little harder thus recommends the 50wt as extra protection for those harder use situations?

I am actually considering the purchase of a 5.0 liter Mustang prior to them going to the new body style and I think I would most likely run what they recommended until I was out of the warranty period. Even then, unless I found another oil that I thought was significantly better AND met the required specifications I would most likely stay with the OEM. Just my 2 cents.


Edited by Ddub (04/18/13 12:56 PM)
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#2976997 - 04/18/13 03:00 PM Re: Need a 5W50 for 5.0 Coyote [Re: swirlparanoid]
Wheels123 Offline


Registered: 03/29/13
Posts: 15
Loc: SC
Heck, just get some Mobil 1 15w50 or some Napa synthetic 15w50. Or, mix some M1 0w40 with the M1 15w50 and make a blend of the two.


Edited by Wheels123 (04/18/13 03:14 PM)

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#2977001 - 04/18/13 03:02 PM Re: Need a 5W50 for 5.0 Coyote [Re: OVERKILL]
hatt Offline


Registered: 01/03/12
Posts: 815
Loc: Florida
Originally Posted By: OVERKILL


I don't know why it is so hard for some people to swallow the concept of warranty compliance. Do we honestly think we are smarter than the OEM's here? Are we that naive that we legitimately feel that by glancing at an oil's PDS that we know more than the manufacturer and what they gleaned through extensive tear-down testing?

Probably the same reason some people can't figure out oil recommendations are made for other things not necessarily for the benefit of the consumer.
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