Rear Gear Lube - Synthetic Or Conventional?

69camz28 · 05-18-2015, 10:18 AM

I have a Strange S60 (Dana 60) in a 69 Camaro. I had it re-geared recently to a 4.30 gear and it has a Tru-Trac carrier. I was told that the gear company (Motive) recommends conventional gear oil - 75/140, and not to use synthetic gear oil. Thoughts on this?

tim worner · 05-18-2015, 03:37 PM

have used 75/90 syn lube for years no problems

Mike Pearson · 05-18-2015, 03:46 PM

Quote:

Originally Posted by 69camz28

I have a Strange S60 (Dana 60) in a 69 Camaro. I had it re-geared recently to a 4.30 gear and it has a Tru-Trac carrier. I was told that the gear company (Motive) recommends conventional gear oil - 75/140, and not to use synthetic gear oil. Thoughts on this?

Is the tru track a posi unit? if so use what Strange tells you to use. if it has a spool and is race only the synthetic works fine. I use it in my Dana race only with spool.

Dragsinger · 05-18-2015, 04:31 PM

just in the last season or two I have been pushed with some resistance to trying synthetic oils. I am pleased with the results to the extent that I bought into an Amsoil racers program.

Amsoil was in the very pioneering phase of synthetic engineering. They have good proven products and support a wide range of sportsman racing.

I think Amsoil products are a good choice and will be running them in the Super 10.

69camz28 · 05-18-2015, 05:06 PM

A True Trac is: The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics.Operation The Truetrac operates as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel encounters a loss of traction or the terrain changes, the gear separation forces take effect and transfer torque to the high-traction wheel. The helical-shaped gears mesh with increasing force until wheel spin is slowed or completely stopped. When the vehicle exits the low traction situation, the differential resumes normal operation.
Performance Operation of the Truetrac is smooth, quiet and automatic. The unit will engage without any driver knowledge or action required. It also has no wearable parts and requires no maintenance, meaning less time in the garage and more on the road.

Geerhead55 · 05-18-2015, 08:05 PM

I'm using synthetic lube in my 4:30 geared Dana 60 as well,, it has a spool.
Danny Durham

Lou Jeffery · 05-19-2015, 07:40 AM

Whenever the subject is Synthetic or Conventional the responses always say "We run it and have no problems". So we understand that there are no negative effects but what are positives? ET, durability, consistency?

05-18-2015, 10:18 AM	#1
69camz28 Member Join Date: Sep 2009 Posts: 148 Likes: 1 Liked 1 Time in 1 Post	Rear Gear Lube - Synthetic Or Conventional? I have a Strange S60 (Dana 60) in a 69 Camaro. I had it re-geared recently to a 4.30 gear and it has a Tru-Trac carrier. I was told that the gear company (Motive) recommends conventional gear oil - 75/140, and not to use synthetic gear oil. Thoughts on this?

05-18-2015, 03:37 PM	#2
tim worner Senior Member Join Date: Jan 2002 Location: duncannon Posts: 837 Likes: 14 Liked 126 Times in 20 Posts	Re: Rear Gear Lube - Synthetic Or Conventional? have used 75/90 syn lube for years no problems __________________ Tim Worner SS 1747

05-18-2015, 04:31 PM	#4
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: Rear Gear Lube - Synthetic Or Conventional? just in the last season or two I have been pushed with some resistance to trying synthetic oils. I am pleased with the results to the extent that I bought into an Amsoil racers program. Amsoil was in the very pioneering phase of synthetic engineering. They have good proven products and support a wide range of sportsman racing. I think Amsoil products are a good choice and will be running them in the Super 10. __________________ Larry Woodfin 471W

05-18-2015, 05:06 PM	#5
69camz28 Member Join Date: Sep 2009 Posts: 148 Likes: 1 Liked 1 Time in 1 Post	Re: Rear Gear Lube - Synthetic Or Conventional? A True Trac is: The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics.Operation The Truetrac operates as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel encounters a loss of traction or the terrain changes, the gear separation forces take effect and transfer torque to the high-traction wheel. The helical-shaped gears mesh with increasing force until wheel spin is slowed or completely stopped. When the vehicle exits the low traction situation, the differential resumes normal operation. Performance Operation of the Truetrac is smooth, quiet and automatic. The unit will engage without any driver knowledge or action required. It also has no wearable parts and requires no maintenance, meaning less time in the garage and more on the road.

05-18-2015, 08:05 PM	#6
Geerhead55 VIP Member Join Date: Sep 2002 Location: Tacoma, Washington Posts: 1,632 Likes: 0 Liked 5 Times in 5 Posts	Re: Rear Gear Lube - Synthetic Or Conventional? I'm using synthetic lube in my 4:30 geared Dana 60 as well,, it has a spool. Danny Durham

05-19-2015, 07:40 AM	#7
Lou Jeffery Junior Member Join Date: Nov 2013 Posts: 91 Likes: 0 Liked 0 Times in 0 Posts	Re: Rear Gear Lube - Synthetic Or Conventional? Whenever the subject is Synthetic or Conventional the responses always say "We run it and have no problems". So we understand that there are no negative effects but what are positives? ET, durability, consistency?