Conflicting fluid info from Eaton for their truetrac
04-28-2016, 09:47 PM
#1
Conflicting fluid info from Eaton for their truetrac I just installed a truetrac, but i havent filled it with fluid yet. I wanna let the rtv cure overnight. This morning i referred to my eaton owners manual, where it reads " high quality miner or synthetic gear lubes are required for use in the truetrac diffs. Regardless of the lube type, always use a GL5 rated lube with the least amount of firction modifier."Blah blah, "consult the vehicles owner manual for recommendation of lube type, weight, and fill volume."
My owners manual called for 75w90 synthetic, so grabbed Mobile 1 synthetic gear oil.
To double check, i went to their website...
http://www.eaton.com/Eaton/ProductsS...ials/index.htm
For the Truetrac model, it reads "we do not recommend a synthetic oil"
What the ****?
My owners manual called for 75w90 synthetic, so grabbed Mobile 1 synthetic gear oil.
To double check, i went to their website...
http://www.eaton.com/Eaton/ProductsS...ials/index.htm
For the Truetrac model, it reads "we do not recommend a synthetic oil"
What the ****?
04-28-2016, 10:41 PM
#3
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It really doesnt make two *****. However, once you installed a trutrac you superseded your factory owners manual. Its a simple device with no need for any special lube. Buy the cheapest non syn gear oil you can find and fill er up.
04-29-2016, 08:36 AM
#6
They personally suggest petroleum base Shell Spirax or Wolfs Head.
He also acknowledged the Truetrac manual can be misleading.
05-01-2016, 05:29 PM
#7
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Yes, mineral (or ANY) based gear oil is somewhat hard to find without any friction modifier added nowadays.
The two mentioned above are available without the modifier, as is the excellent Torco RGO (for more $$), and a few others.
The two mentioned above are available without the modifier, as is the excellent Torco RGO (for more $$), and a few others.
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05-13-2016, 12:09 PM
#9
M1 works fine in most trutrac units. Some synthetics will cause noise and reduction of limited slip function. Don't add friction modifier. Most fluids have several % in there already and it isn't needed for trutrac. The friction modifier does reduce friction and help quiet noise in some diffs.
05-14-2016, 05:02 PM
#10
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Eaton used to not recommend syn lubes....but have recently got their heads out of the sand and give syn oil the OK 
Look in the bottm right of the page you were on for the date
http://www.eaton.com/rr/ProductsServ...ants/index.htm
© 2015 Eaton
All Rights Reserved
Look in the bottm right of the page you were on for the date
http://www.eaton.com/rr/ProductsServ...ants/index.htm
© 2015 Eaton
All Rights Reserved
Lubricants
In promoting component reliability and longevity, proper lubrication is the key to a sound and effective maintenance program. Without effective lubricants at proper levels and temperatures, remaining maintenance procedures will not keep components functional.
Synthetic lubricants have proven to be superior to petroleum products and represent opportunities to promote superior maintenance and bottom line operating performance while significantly extending component service life and reliability. Certain products and applications require the use of approved synthetic lubricants.
Eaton lubrication requirements can be found the Eaton Lubrication Manual (TCMT0021), and the list of approved suppliers can in the Eaton Approved Lubricant Supplier Manual (TCMT0020).
In promoting component reliability and longevity, proper lubrication is the key to a sound and effective maintenance program. Without effective lubricants at proper levels and temperatures, remaining maintenance procedures will not keep components functional.
Synthetic lubricants have proven to be superior to petroleum products and represent opportunities to promote superior maintenance and bottom line operating performance while significantly extending component service life and reliability. Certain products and applications require the use of approved synthetic lubricants.
Eaton lubrication requirements can be found the Eaton Lubrication Manual (TCMT0021), and the list of approved suppliers can in the Eaton Approved Lubricant Supplier Manual (TCMT0020).
05-14-2016, 09:45 PM
#11
Truetrac? Get used to the "clunk." As for an LSD, it's great, but there's far too much slop within the differential itself. Eventually, we got tired of the clunk & pulled it out for a freshened up Trac-loc, (stock for an 8.8). Even though, the 8.8 is a Ford pumpkin, the design of the Truetrac diff is the same.
Truetracs clunk. It's not drivetrain slop, housing mounts, hub slop, loose pinion nut, incorrect gear clearance, a crush sleeve issue, axle, control arm bushing, exhaust rattle, girlfriend banging her head on the dash...it is the Truetrac differential, they clunk.
Truetracs clunk. It's not drivetrain slop, housing mounts, hub slop, loose pinion nut, incorrect gear clearance, a crush sleeve issue, axle, control arm bushing, exhaust rattle, girlfriend banging her head on the dash...it is the Truetrac differential, they clunk.
05-15-2016, 10:23 AM
#13
You are in the minority. When we got ours in around 07, they were highly recommended & it clunked from day one. By turning an axle w/ the cover off & then the drive shaft, the massive delay between axle or drive shaft rotation & spider gear movement can be seen in either direction. I'd still recommend one (in terms of performance) w/ a warning to the buyer regarding "clunk."
general comment:
Still trying to figure out why friction modifiers are being mentioned for a differential w/ no clutch packs, lol.
general comment:
Still trying to figure out why friction modifiers are being mentioned for a differential w/ no clutch packs, lol.
05-15-2016, 12:57 PM
#14
Truetrac? Get used to the "clunk." As for an LSD, it's great, but there's far too much slop within the differential itself. Eventually, we got tired of the clunk & pulled it out for a freshened up Trac-loc, (stock for an 8.8). Even though, the 8.8 is a Ford pumpkin, the design of the Truetrac diff is the same.
Truetracs clunk. It's not drivetrain slop, housing mounts, hub slop, loose pinion nut, incorrect gear clearance, a crush sleeve issue, axle, control arm bushing, exhaust rattle, girlfriend banging her head on the dash...it is the Truetrac differential, they clunk.
Truetracs clunk. It's not drivetrain slop, housing mounts, hub slop, loose pinion nut, incorrect gear clearance, a crush sleeve issue, axle, control arm bushing, exhaust rattle, girlfriend banging her head on the dash...it is the Truetrac differential, they clunk.
05-16-2016, 07:30 PM
#15
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This supposedly was done to quell the infamous 'rocks in a box' type of noise which was particular to the T2s on throttle-off 'coast down' ONLY, and had NOTHING to do with the actual torque biasing, or actual function of the diff.
The actual physics of how the additive stopped the noise I do not know.
05-17-2016, 10:13 AM
#16
GM actually released a TSB about adding their friction modifier to the stock, '99-'02 Torsen T2 diffs which were factory installed in our rides (except for the SLP finished SSes).
This supposedly was done to quell the infamous 'rocks in a box' type of noise which was particular to the T2s on throttle-off 'coast down' ONLY, and had NOTHING to do with the actual torque biasing, or actual function of the diff.
The actual physics of how the additive stopped the noise I do not know.
This supposedly was done to quell the infamous 'rocks in a box' type of noise which was particular to the T2s on throttle-off 'coast down' ONLY, and had NOTHING to do with the actual torque biasing, or actual function of the diff.
The actual physics of how the additive stopped the noise I do not know.
It must stick to the gears & dampen sound or something. Generally, in ref to lube, we use gl-4 in anything with gears & roller bearings. Any lube without contact pressure protection, (atf in manual trans for example), has led to early wear. Although, we do subject the car to road course driving.
05-17-2016, 02:20 PM
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He says to ALWAYS use a GL-4 rated manual transmission fluid '"of the proper viscosity".
That latter quote IS the problem though, since there are not too many MTLs/MTFs which are thin enough to run in a T56, especially in the cold(er) ambient temps.
05-25-2016, 09:00 PM
#19
At the end of the day, I would never go for a TruTrac. Too many issues noted over many platforms and they are made in China. I'd rather support a US manufacturer who makes a helical deal. Wavetrack is US made and has a lifetime warranty, thing is, their application list is limited.
I suppose to each his own.
I suppose to each his own.
05-26-2016, 05:59 PM
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^^^Yes, a Wavetrac is what I would be installing into a 9, if I had one.
The only other diff I would consider is the Platinum Trac, but that is more of a pure road race diff which will wear out much quicker than the Wavetrac would on the street.
The only other diff I would consider is the Platinum Trac, but that is more of a pure road race diff which will wear out much quicker than the Wavetrac would on the street.