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#3310443 - 03/13/14 10:53 AM 50w drive train oil
sdan27 Offline


Registered: 06/07/09
Posts: 476
Loc: Michigan
Would a non-synthetic 50w drive train oil that is TO-4 rated be suitable for us in a 10-speed Eaton transmission in a semi-truck? The truck and transmission are 2002 model years and are well past any kind of warranty coverage. The truck is only driven locally and this time of year only drives 20-30 miles a day.
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'94 F250 Powerstroke. LF9691 primary oil. AH1141 air filter. FS1282, FF5320 fuel filter. WF2071 coolant filter.

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#3311440 - 03/14/14 07:42 AM Re: 50w drive train oil [Re: sdan27]
supercity Offline


Registered: 06/12/12
Posts: 894
Loc: Melbourne, Australia
It should be, above freezing temperatures.

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#3312000 - 03/14/14 04:35 PM Re: 50w drive train oil [Re: sdan27]
2hellandback Offline


Registered: 04/07/08
Posts: 55
Loc: Idaho
Why would you give up better fuel economy and better shifting? and most likely better protection ? Even if your 50w was free you would still come out ahead using synthetic...


Edited by 2hellandback (03/14/14 04:37 PM)

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#3318129 - 03/20/14 02:46 PM Re: 50w drive train oil [Re: sdan27]
camelCase Offline


Registered: 07/11/13
Posts: 168
Loc: Southeastern, USA
Yeah, in a truck like that I wouldn't cheap out on a non-synthetic. Bite the bullet now and get a better fluid. It will shift better, protect better, and last longer.

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#3383533 - 05/28/14 09:12 PM Re: 50w drive train oil [Re: sdan27]
used_0il Online   content


Registered: 03/06/14
Posts: 299
Loc: canada
The answer is yes, not why, what if or how come.

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#3383536 - 05/28/14 09:15 PM Re: 50w drive train oil [Re: sdan27]
Clevy Online   happy


Registered: 11/11/10
Posts: 7615
Loc: Saskatoon canada
What is 50w?
I've never seen anything labelled even remotely as such. So please specify what product you are referring to because 50w isn't a thing.
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#3383667 - 05/29/14 12:35 AM Re: 50w drive train oil [Re: Clevy]
MolaKule Offline


Registered: 06/05/02
Posts: 14697
Loc: Iowegia
Originally Posted By: Clevy
What is 50w?
I've never seen anything labelled even remotely as such. So please specify what product you are referring to because 50w isn't a thing.


50W transmission lubes are common in multi-gear ratio HD truck transmissions.

I would ask, what is the speced transmission oil weight, and is this a PowerShift design?


Edited by MolaKule (05/29/14 12:36 AM)
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#3383899 - 05/29/14 11:48 AM Re: 50w drive train oil [Re: sdan27]
Texan4Life Offline


Registered: 01/28/10
Posts: 2145
Loc: Texas
Depends what does eaton spec for the transmission?
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#3384195 - 05/29/14 06:17 PM Re: 50w drive train oil [Re: sdan27]
Doug Hillary Offline


Registered: 05/30/03
Posts: 4880
Loc: Airlie Beach Australia
Hi,
sdan27 - As Molakule states this is a common viscosity in Eaton multispeed transmissions. Check the correct viscosity for yours though - the TO4 requirement is a OEM Spec

I used both Castrol and Delvac Syn 50 lubricants in my 13spd and 18spd Eaton gearboxes for many years. They reduced operating temps by about <10C over a mineral lubricant.
These had a Pour Point <40F and a viscosity around 17cSt @ 100C

They greatly extended seal and component life along with greatly extended OCIs (out to 1m> kms)
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Doug

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#3386429 - 06/01/14 05:05 PM Re: 50w drive train oil [Re: sdan27]
xxch4osxx Offline


Registered: 03/11/09
Posts: 1584
Loc: Cedarbrae, Ontario
The 18 speed trannys at work all take 50 weight oil. The boss buys the Delvac brand. The only reason he needed to change it is because the coolant/transmission oil cooler started leaking coolant into the transmission oil and he had to flush the transmission a few times to get all of the coolant out.
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2004 Chev Silverado 4x4 using all Amsoil lubricants.
2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)


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#3389158 - 06/04/14 09:56 PM Re: 50w drive train oil [Re: sdan27]
chevrofreak Offline


Registered: 06/17/05
Posts: 4911
Loc: Billings, MT
Citgo Citgear synthetic HD 50 is a good inexpensive option
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#3412937 - 07/02/14 08:55 PM Re: 50w drive train oil [Re: chevrofreak]
krismoriah72 Offline


Registered: 02/16/09
Posts: 147
Loc: wv
50wt synthetic change every 2000hrs or every 5 yrs
80w90 change every 500hrs

If ur keeping the truck 5 more years fill with syn and forget it. $140 a bucket.

If ur keeping the truck 1 year..fill it with 80W90 and forget it. $60 a bucket

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