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Eaton true-trac gear oil
#3073378
09/01/22 07:35 PM
09/01/22 07:35 PM
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Joined: Jun 2007
Posts: 1,169
clarks summit pa
73cuda340
OP
super stock
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OP
super stock
Joined: Jun 2007
Posts: 1,169
clarks summit pa
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I'm ready to fill up my new Dana 60 that has a eaton true-trac differential installed. Eaton says to use 80w90 non synthetic , but when I ordered the gear oil for it, I accidentally received 85w140 non synthetic for it. Will this cause any issues using the heavier oil? I personally don't think so, since the true-trac doesn't have any clutches in it, but I'd rather ask just to be safe. Thanks
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
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Re: Eaton true-trac gear oil
[Re: 73cuda340]
#3073394
09/01/22 08:14 PM
09/01/22 08:14 PM
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Joined: Oct 2005
Posts: 268
Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 268
Anchorage, Alaska
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FWIW, my Dana 60 with a TrueTrac was shipped with 3 quarts of Lucas 85W-140 non synthetic, when new
440, 4-Speed, 3.54
1968, when Dinosaurs ruled the Earth
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Re: Eaton true-trac gear oil
[Re: TJP]
#3073455
09/02/22 12:51 AM
09/02/22 12:51 AM
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Joined: Jun 2007
Posts: 1,169
clarks summit pa
73cuda340
OP
super stock
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OP
super stock
Joined: Jun 2007
Posts: 1,169
clarks summit pa
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I'm going to grab the 80w90 anyway, I was just curious as to whether it would cause any issues. I agree that it's not worth the experiment.
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
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Re: Eaton true-trac gear oil
[Re: 73cuda340]
#3074367
09/05/22 05:02 AM
09/05/22 05:02 AM
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Joined: Mar 2007
Posts: 3,277
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
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I use Lucas gear oil in the Eaton recommended weight (85-90). It does not have any Friction Modifier in it, which is what Eaton says to avoid.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Gear lube isn't that expensive 
