Author Topic: Gear oils being used  (Read 1985 times)

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019854Runner

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Gear oils being used
« on: Apr 20, 2018, 05:29:08 PM »
Just to be sure, so the F/R Diffs, transmission, Marlin Doubler all uses 80W/90 Gear oil? 1985 4runner with Marlin Doubler.

redneckcustoms13

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Re: Gear oils being used
« Reply #1 on: Apr 20, 2018, 06:15:04 PM »
Yes.
83 long bed 2wd sas, 3rz, w56, duals with 4.7 rear, 4.88 elock front, spartan rear, 39.5 iroks
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SqWADoosh

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Re: Gear oils being used
« Reply #2 on: Apr 20, 2018, 06:22:31 PM »
MT-90 in the trans and cases.

blackdiamond

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Re: Gear oils being used
« Reply #3 on: Apr 20, 2018, 09:06:49 PM »
MT-90 in the trans and cases.

Is better but not required. I know why for the transmission with GL-4 and syncros, but why is it superior in the t-case?
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

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SqWADoosh

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Re: Gear oils being used
« Reply #4 on: Apr 21, 2018, 04:28:03 AM »
Is better but not required. I know why for the transmission with GL-4 and syncros, but why is it superior in the t-case?

I run same in both in case of seal failure causing migration and for ease of using the same. My cases always ran great and quiet using it.

blackdiamond

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Re: Gear oils being used
« Reply #5 on: Apr 21, 2018, 08:33:41 AM »
I run same in both in case of seal failure causing migration and for ease of using the same. My cases always ran great and quiet using it.

That makes sense. I have never spent the money for Redline anywhere but the transmission and even topped that off with the Valvoline blend I used everywhere else.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

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Re: Gear oils being used
« Reply #6 on: Apr 21, 2018, 09:30:53 AM »
Mobile 1 is just as good and less expensive.
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

blackdiamond

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Re: Gear oils being used
« Reply #7 on: Apr 21, 2018, 11:13:53 AM »
Mobile 1 is just as good and less expensive.

For lubrication purposes, yes, but Redline is GL-4 instead of GL-5 (that is GL-4 compatible) and works much better with the transmission syncros. You can feel the difference.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

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OVRAROK

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Re: Gear oils being used
« Reply #8 on: Apr 21, 2018, 12:31:58 PM »
I run mt90 in trans, 80/90 in cases and diffs, I drain and put new in every 2 years. I'm running MC eco seal at trans output.
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Gnarly4X

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Re: Gear oils being used
« Reply #9 on: Apr 21, 2018, 08:27:08 PM »
For lubrication purposes, yes, but Redline is GL-4 instead of GL-5 (that is GL-4 compatible) and works much better with the transmission syncros. You can feel the difference.

As I remember, when I spoke to a Redline tech rep, they recommended MTL for my W56 transmission.  It made a very noticeable difference in shifting.

This time I tried Mobil 1 75W-90 Synthetic.  I noticed a much smoother shift and quick gear mesh than the non-synthetic I had in before.  I can't effectively compare the two (MTL vs Mobil 1).  Since my high ambient temperatures here in AZ can get up to 100+ degrees for 3 to 4 months, I decided to try the Mobil 1 75W-90.  For a W56 transmission, my 1986 Toyota Repair Manual says:  Oil Grade:  API GL-4 or GL-5, Viscosity: SAE 75-90 or 80W-90.

I would bet that Mobil Oil is aware of any issues with "yellow metal" and synchro gear corrosion, and have formulated their gear oil to meet the required synchro lock up on the shaft during shifts.  The brand of synchros is probably more important for proper synchronizing than the gear oil.  My transmission shop here said they only install Toyota factory synchros in these transmissions because the alloy is the best for proper synchronization.

I believe I could not tell the difference between Redline and Mobil 1 in my transmission as far as shifting.

Redline is an excellent choice, but at the time I was adding gear lube, it was way more difficult to source.  Difference in price for 7 quarts was about $50, so Mobil 1 was a little more economical and budget friendly at the time.

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« Last Edit: Apr 22, 2018, 04:40:39 AM by Gnarly4X »
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

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Re: Gear oils being used
« Reply #10 on: Apr 21, 2018, 09:33:07 PM »
As I remember, when I spoke to a Redline tech rep, they recommended MTL for my W56 transmission.  It made a very noticeable difference in shifting.

I 100% concur
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SqWADoosh [04:19 PM]: *sigh* I guess Chris is right and I just need to wait until I'm in a place where I have a tow rig and trailer before I get this caliber of truck
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Re: Gear oils being used
« Reply #11 on: Apr 23, 2018, 09:05:29 AM »
I tried the sta-lube GL 4 and it shifted better than the GL 5 too.
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Re: Gear oils being used
« Reply #12 on: Apr 23, 2018, 11:57:36 AM »
Redline is great product.  We use MT-90 in the transmissions and Tcases here at Marlin.   Redline also makes this super cool product called shockproof, which is a multi viscosity.  Shockproof is cool for the diffs, but I think its a little too sticky and gums up transmissions and tcases.  Mobil one I know makes some good products too, but im just not familiar with them, and haven't ran them personally.   
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Re: Gear oils being used
« Reply #13 on: Apr 23, 2018, 12:26:14 PM »
Redline is great product.  We use MT-90 in the transmissions and Tcases here at Marlin.   Redline also makes this super cool product called shockproof, which is a multi viscosity.  Shockproof is cool for the diffs, but I think its a little too sticky and gums up transmissions and tcases.  Mobil one I know makes some good products too, but im just not familiar with them, and haven't ran them personally.
I use Shockproof in the front and rear diff. Best diff oil money can buy.
I am 1/5th of Perfect Fit
SqWADoosh [04:19 PM]: *sigh* I guess Chris is right and I just need to wait until I'm in a place where I have a tow rig and trailer before I get this caliber of truck
Mudder [08:28 PM]:   not try to be a jerk, but are you serious bestgen?
Prismo [06:11 PM]:   Done, time to relax or as Bestgen says....FREEDOM!
HogCanyonHopper [06:54 PM]:   I like my little rod. it gets the job done
H8PVMNT [03:30 PM]: I can go both ways.

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Re: Gear oils being used
« Reply #14 on: Apr 23, 2018, 12:33:37 PM »
I use Shockproof in the front and rear diff. Best diff oil money can buy.

Heavy or lightweight?
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Re: Gear oils being used
« Reply #15 on: Apr 23, 2018, 12:53:12 PM »
Heavy or lightweight?
I have always used the Pink/Red heavy stuff. It's $$$$$$ but Hard to beat it.
I like other people strain it when I drain it, then put it right back in and top off with new.


From RedLine
•Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90
•Many performance racing applications like Sprint/Midget/Dirt Late Model Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear ends
•Not recommended for most synchro applications due to the product's extreme slipperiness
I am 1/5th of Perfect Fit
SqWADoosh [04:19 PM]: *sigh* I guess Chris is right and I just need to wait until I'm in a place where I have a tow rig and trailer before I get this caliber of truck
Mudder [08:28 PM]:   not try to be a jerk, but are you serious bestgen?
Prismo [06:11 PM]:   Done, time to relax or as Bestgen says....FREEDOM!
HogCanyonHopper [06:54 PM]:   I like my little rod. it gets the job done
H8PVMNT [03:30 PM]: I can go both ways.

blackdiamond

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Re: Gear oils being used
« Reply #16 on: Apr 23, 2018, 02:34:35 PM »
I have always used the Pink/Red heavy stuff. It's $$$$$$ but Hard to beat it.
I like other people strain it when I drain it, then put it right back in and top off with new.


From RedLine
•Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90
•Many performance racing applications like Sprint/Midget/Dirt Late Model Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear ends
•Not recommended for most synchro applications due to the product's extreme slipperiness


What do you notice in the diver seat?  You can feel a transmission feeling better, but can you honestly tell any difference with the diffs?  I ask because I doubt that our actual use would reduce the lifespan of a diff using conventional. I run blend I think.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

Moab Tested & Rubicon Approved

liveoak

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Re: Gear oils being used
« Reply #17 on: Apr 24, 2018, 12:18:53 PM »
I run MT-90 in trans and transfer case (If I lived in a cold climate, I'd probably use MT-85) and conventional GL-5 80/90 hypoid non LS (limited slip) in the diffs due to the fact I change that fluid often. ARB does not recommend using an LS gear oil so mobil 1 would not be a good choice for the diffs if you have an ARB. I don't know if shockproof is a true LS or not. 
That being said I wouldn't use a gear oil with a limited slip additive(mobil 1) in my manual transmission either. Yes Toyota recommends GL-4 or GL-5 as Gnarly says but it doesn't say to use an LS additive, so why would you?
Regarding GL-4 vs GL-5 4crawler explains it well
"Note that while the transmission oil lists either GL-4 or GL-5 oil, it is best to use GL-4 oil there, it simply works better, makes for faster and smoother shifting (due to the GL-4 oil friction modifiers and the synchro-mesh rings in the transmission). It is "OK" to use GL-5 oil, in that it won't damage anything, but GL-4 oil will work better."
« Last Edit: Apr 24, 2018, 02:13:03 PM by liveoak »
my 3rz swap. http://board.marlincrawler.com/index.php?topic=97722.0

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