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#4464087 - 07/19/17 03:10 PM Why did Ford go from 5W20 to 5W30?
AnarchyX Offline


Registered: 06/27/08
Posts: 191
Loc: Texas
I recall in the early aughts they were one of the first, or few, car companies that required 5W20 for their cars. Now they seem to have gone to where most everyone has always been, namely 5W30.

Anyone know why the change?

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#4464090 - 07/19/17 03:15 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
zorobabel Offline


Registered: 01/27/11
Posts: 479
Loc: Anaheim, CA
Ecoboost
_________________________
1997 Maxima 175k, Delvac 15w40, Wix 51315
2004 Corolla 189k, VWB 5w20 + SSS 10w40, MGL4967

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#4464092 - 07/19/17 03:16 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
If you're referring to the Ecoboost engines, it's because they're prone to fuel in the oil, causing viscosity losses. Otherwise, I hadn't heard their regular non-EB gas engines were changing. 5W20 is an EPA invention anyway.
_________________________
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

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#4464093 - 07/19/17 03:16 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
gfh77665 Offline


Registered: 09/01/08
Posts: 3799
Loc: Southeast Texas
Pretty much an admittance by Ford that a thicker oil adds protection.

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#4464095 - 07/19/17 03:17 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
Yes for the most part turbo and direct injection are tough on oil.

Ford have also gone to 5w30 in the NA 6.2L V8 in the SuperDuty...apparently 5w20 wasn't up to heavy duty use.
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Thick vs Thin test: 15k / 43k miles complete

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#4464097 - 07/19/17 03:18 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Slows down the viscosity loss due to DI fuel contamination, I would guess.
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2017 Chevrolet Corvette Grand Sport

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#4464098 - 07/19/17 03:18 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
merconvvv Offline


Registered: 07/10/16
Posts: 682
Loc: il usa
Eggs yellows are bad for you
Then they are ok for you.

Engine health i suppose.
_________________________
1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0

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#4464100 - 07/19/17 03:20 PM Re: Why did Ford go from 5W20 to 5W30? [Re: zorobabel]
skyactiv Offline


Registered: 03/02/13
Posts: 4404
Loc: The Midwest
Originally Posted By: zorobabel
Ecoboost


I was gonna guess that, too. Some models that had/have natural aspirated engines specified 5W20 and the new turbo direct injection engines use a 5W30?
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#4464101 - 07/19/17 03:21 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
merconvvv Offline


Registered: 07/10/16
Posts: 682
Loc: il usa
Chevy requires 5w30 in their little 2016 2.4 nonturbo my sis drives.


Edited by merconvvv (07/19/17 03:21 PM)
_________________________
1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0

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#4464118 - 07/19/17 03:34 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
CT8 Offline


Registered: 10/09/14
Posts: 11008
Loc: Idaho
What would make the 5W-20 oil better?
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#4464124 - 07/19/17 03:38 PM Re: Why did Ford go from 5W20 to 5W30? [Re: zorobabel]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
To my knowledge, they are still recommending 5w-20 on most cars built in 1990's and early 2000's. They back specced engines that were designed for 30 grade....down to 20 grade back around 2001. The modular motors - especially the 4.6L are the most obvious.

Ford Oil Specs

Yet I look at this chart linked above and I can't make sense of it. For my 2002 Lincoln (4.6L 4v DOHC) it appears to say recommended 5w-20 up to 2004. Then blank. So what do I use now? LOL. The back spec went into effect in 2001. My 2002 calls for 5w-20 on the filler cap and owner's manual. My 1997 4.6L DOHC with the identical engine was specced for 5w-30. In the past 1-2 yrs I'm sure I saw Ford Oil charts that still had the 4.6L engines on 5w-20....unless they forward specced the charts again to hide the evidence of the goof from 2001...lol.
_________________________
----------------

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

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#4464126 - 07/19/17 03:38 PM Re: Why did Ford go from 5W20 to 5W30? [Re: gfh77665]
Smokescreen Offline


Registered: 05/25/05
Posts: 3362
Loc: Alberta, Canada
Originally Posted By: gfh77665
Pretty much an admittance by Ford that a thicker oil adds protection.


_________________________
09 Corolla 1.8L-370Kkms(231Kmi)-PP,Denso
05 LeSabre 3.8L-210Kkms(131Kmi)-Sopus,Wix
03 Sierra 2500 6.0L-204Kkms(127Kmi)-Sopus,Wix

All with mpg > EPA

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#4464136 - 07/19/17 03:52 PM Re: Why did Ford go from 5W20 to 5W30? [Re: CT8]
igs Offline


Registered: 11/29/16
Posts: 51
Loc: CA
Originally Posted By: CT8
What would make the 5W-20 oil better?


Nothing. 5W-20 sux.
_________________________
2018 Honda J35Y6 | Walmart SuperTech 20W50 Summer | Chevron Supreme 5W30 Winter | 6 Month OCI

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#4464138 - 07/19/17 03:52 PM Re: Why did Ford go from 5W20 to 5W30? [Re: AnarchyX]
userfriendly Offline


Registered: 06/03/03
Posts: 2630
Loc: LaFinDuMonde
The thinnies posted that 5W30 is too thick for modern engines with tight clearances.
I know, they opened up the clearances to allow the thick 5w30 oil to flow through.

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#4464139 - 07/19/17 03:53 PM Re: Why did Ford go from 5W20 to 5W30? [Re: 69GTX]
igs Offline


Registered: 11/29/16
Posts: 51
Loc: CA
Originally Posted By: 69GTX
To my knowledge, they are still recommending 5w-20 on most cars built in 1990's and early 2000's. They back specced engines that were designed for 30 grade....down to 20 grade back around 2001. The modular motors - especially the 4.6L are the most obvious.

Ford Oil Specs

Yet I look at this chart linked above and I can't make sense of it. For my 2002 Lincoln (4.6L 4v DOHC) it appears to say recommended 5w-20 up to 2004. Then blank. So what do I use now? LOL. The back spec went into effect in 2001. My 2002 calls for 5w-20 on the filler cap and owner's manual. My 1997 4.6L DOHC with the identical engine was specced for 5w-30. In the past 1-2 yrs I'm sure I saw Ford Oil charts that still had the 4.6L engines on 5w-20....unless they forward specced the charts again to hide the evidence of the goof from 2001...lol.


The only reason they are "recommending" 5W-20 is because the EPA has a gun pointed to their head.
_________________________
2018 Honda J35Y6 | Walmart SuperTech 20W50 Summer | Chevron Supreme 5W30 Winter | 6 Month OCI

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