Recent Topics
Which car to buy?
by jrcowboys. 12/12/18 04:55 PM
New Tire Cracking
by robd. 12/12/18 04:43 PM
SAR B6P - Thoughts?
by 28oz. 12/12/18 03:59 PM
Time to sell the 1-ton Dually
by 02SE. 12/12/18 03:55 PM
Shell Rotella Grease
by WMW0505. 12/12/18 02:27 PM
Need to add attic ladder in stairwell
by Klutch9. 12/12/18 12:51 PM
Mystik JT-8 15w40, 2015 RAM EcoDiesel, 4,995 mi
by SavagePatch. 12/12/18 12:45 PM
Fram Tough Guard Air Filters at Rock Auto
by Snagglefoot. 12/12/18 12:42 PM
Electrical contact cleaner
by CELICA_XX. 12/12/18 12:32 PM
5w-30 in 277k mile chevy 350 tbi
by dogememe. 12/12/18 12:22 PM
voltage test for coolant condition
by NissanMaxima. 12/12/18 12:17 PM
paying Premiun for the name(infiniti/nissan
)

by 2008wrx. 12/12/18 11:25 AM
POE oil (R-410a)
by WyrTwister. 12/12/18 09:44 AM
Any Volvo Owners, need some help!
by LazyDog. 12/12/18 09:34 AM
NOACK & Sheer
by WyrTwister. 12/12/18 09:34 AM
Rotary help. 2010 series 2 RX8
by TinyVoices. 12/12/18 08:32 AM
Can you mathematically estimate top speed?
by KCJeep. 12/12/18 08:06 AM
2019 GM 6.2 AFM
by XL1200RFan. 12/12/18 07:32 AM
Newest Members
jefe_de_estado, CM613, Geardaddies, 01ws666, ariefnrst
66660 Registered Users
Who's Online Now
108 registered members (28oz, 97K15004WD, ad244, 64bawagon, 53' Stude, 15 invisible), 1,861 guests, and 36 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics294,990
Posts4,925,554
Members66,660
Most Online2,553
Oct 27th, 2018
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 4 1 2 3 4
75W-85 vs 75W-90 for MTF? #1542734
07/24/09 11:51 AM
07/24/09 11:51 AM
Joined: Jan 2005
Posts: 489
Quebec, Canada
Minou Offline OP
Minou  Offline OP
Joined: Jan 2005
Posts: 489
Quebec, Canada
My owner's manual calls for 75W-85 (API GL-4) MTF but I just flushed that and put Shell Spirax S 75W-90 (API GL-5, MT-1, pour point -45C) synthetic I got from my brother's supply.

The transmission was very stiff (until warmed up) on cold winter days with the OEM stuff. Could it have been dino oil? Is 75W-85 readily available in stores?

The Spirax did great when I put it in my former '05 Corolla. Shifting when cold in the winter was just like in the summer and fast idle speed almost gained 200 RPM.

I hope to improve the cold shifting of my Sonata the same. So far in summer temps, the change is almost unnoticeable.


2016 Ford Edge SEL AWD 3.5l V6
2016 Ski-Doo Grand Touring LE 900
2016 Suzuki Burgman 650
Re: 75W-85 vs 75W-90 for MTF? [Re: Minou] #1542757
07/24/09 12:17 PM
07/24/09 12:17 PM
Joined: May 2009
Posts: 610
Afghanistan
Captain_Klink Offline
Captain_Klink  Offline
Joined: May 2009
Posts: 610
Afghanistan
redline and amsoil make excellent mtf lite.
in my own tranny, i just mix 50:50 PZ synchromesh with Mobile 1 5w30 EP - both cold weather and hot weather shifting is excellent, 1995 Mitsubishi 5 speed. manual calls for 75w85 gl3.

Re: 75W-85 vs 75W-90 for MTF? [Re: Captain_Klink] #1542889
07/24/09 03:18 PM
07/24/09 03:18 PM
Joined: Feb 2003
Posts: 8,756
RI
unDummy Offline
unDummy  Offline
Joined: Feb 2003
Posts: 8,756
RI
75w85 is not readily available in stores. But, any automaker that has a vehicle taking 75w85 will have their version available at the dealers parts department.

I've seen 75w90's that were blends. So, 75w85 should be easy enough to blend without too much 'synth'. Unless it is labelled full synth, it isn't!

Redline MT90 can be thinned with 25%-50% MTL to make your 75w85. I would guess that Amsoil MTG/MTF can be blended the same way.

Hyundai/Kia...just recently stepped down from 90wt to 85wt to improve performance. On cold days, just about any transmission is a little stiff. Both fluids being a 75w, I would not expect a 90wt to shift any better when cold.

Manual transmissions are such a small percentage of the US market, and usually lifetime fill(read your maintenance manual for intervals), that I truly don't expect wallyworld or even the local autoparts stores to stock any, any time soon.

Pretty popular weight overseas.


Those who say it cannot be done, should not interrupt the person doing it.
Your automaker lied!
Is this a spelling/grammar forum or BITOG?
Re: 75W-85 vs 75W-90 for MTF? [Re: unDummy] #1543463
07/25/09 04:50 AM
07/25/09 04:50 AM
Joined: Jul 2006
Posts: 2,338
Magnolia, TX
INDYMAC Offline
INDYMAC  Offline
Joined: Jul 2006
Posts: 2,338
Magnolia, TX
You might not want to use GL5 in your tranny. Most GL5's aren't yellow metal friendly.


2013 Toyota Tundra DC 4X4 5.7L FFV
2012 Toyota 4Runner 2WD SR5
2004 Honda S2000
Re: 75W-85 vs 75W-90 for MTF? [Re: INDYMAC] #1543486
07/25/09 06:13 AM
07/25/09 06:13 AM
Joined: Feb 2003
Posts: 8,756
RI
unDummy Offline
unDummy  Offline
Joined: Feb 2003
Posts: 8,756
RI
Maybe after a million miles of usage, run underfilled and seriously overheated for an extended time, and after being soaked with water after taking the car submarining.....or combination of the above....
I haven't found a GL5 that WASN'T yellow metal friendly with regular 30k intervals in a normal environment.

If there is no maintenance, you overheat the fluid, and at some point it takes in any water, any fluid can be unfriendly.


Those who say it cannot be done, should not interrupt the person doing it.
Your automaker lied!
Is this a spelling/grammar forum or BITOG?
Re: 75W-85 vs 75W-90 for MTF? [Re: unDummy] #1543775
07/25/09 11:40 AM
07/25/09 11:40 AM
Joined: Sep 2006
Posts: 19,479
Chicago Area
mechtech2 Offline
mechtech2  Offline
Joined: Sep 2006
Posts: 19,479
Chicago Area
Yeah... GL5s are buffered for the last two decades or so.

Since the car in question is in Canada with cool winters, the lighter gear oil would be wise. But normally, it would not make much difference between the two grades mentioned.

Re: 75W-85 vs 75W-90 for MTF? [Re: unDummy] #1543790
07/25/09 11:47 AM
07/25/09 11:47 AM
Joined: Mar 2004
Posts: 1,482
Flaherty, KY
92saturnsl2 Offline
92saturnsl2  Offline
Joined: Mar 2004
Posts: 1,482
Flaherty, KY
 Originally Posted By: unDummy

I haven't found a GL5 that WASN'T yellow metal friendly with regular 30k intervals in a normal environment.


That attribute of GL5 is real and can destroy transmissions even in short period of time. Different transmissions have varying amount of those metals, but the use of GL-5 will cause wear regardless.

There is a reason the vehicle manufacturer recommend GL-4 for manual transmissions, which most do. If you want your vehicle to last 200k, put the right fluid in. You're playing the lottery when you use GL-5; Odds are against you that the GL-5 will cause premature failure-- Often much sooner than you'd think.


1985 F-250HD 7.5L 4x4 135k- Castrol GTX 15w-40 HDEO
04 Odyssey EX 182k PUP 0w-40
96 Maxima GLE 250k QS Defy 5w-30
07 Chrysler Pacifica Limited 129k Chevron Supreme 5w-20
Re: 75W-85 vs 75W-90 for MTF? [Re: Minou] #1543868
07/25/09 12:44 PM
07/25/09 12:44 PM
Joined: Jan 2003
Posts: 352
Ontario, Canada.
7TFord Offline
7TFord  Offline
Joined: Jan 2003
Posts: 352
Ontario, Canada.
Our Toyota Yaris specs either a GL-4 or GL-5 75W-90 lubricant and at first fluid change I put in Chrysler's bottling (#4874459) of Castrol's Syntorq LT, which is a 75W-85/GL-4.

I wasn't pleased with it and had some gear clash in all temps, although stiff winter shifting was not a problem. Have since switched to Amsoil MTG and will be using it from now on.


06 4Runner Sport V8
1970 Mach 1/351C4V
Re: 75W-85 vs 75W-90 for MTF? [Re: Minou] #1544033
07/25/09 04:25 PM
07/25/09 04:25 PM
Joined: Jun 2007
Posts: 351
tampa fl
ravenchris Offline
ravenchris  Offline
Joined: Jun 2007
Posts: 351
tampa fl
Consider RL MTL (GL-4). 2007 Sonata manual, 13K with this product and good results. Local Hyundai Dealer has 75W-85 synthetic.

Re: 75W-85 vs 75W-90 for MTF? [Re: ravenchris] #1544105
07/25/09 06:29 PM
07/25/09 06:29 PM
Joined: Jun 2009
Posts: 1,380
Alaska
m37charlie Offline
m37charlie  Offline
Joined: Jun 2009
Posts: 1,380
Alaska
My Unimog calls for 75W-85W of a particular specification, Castrol Syntrans or one of 3 others, none of which are obtainable in the US. I'm thinking about a 50-50 mix of Mobil Synthetic Trans Fluid 50 and MSTF Arctic. Definitely needs a GL4 synthetic, NOT a GL5 since it has synchros. I have 2 gallons of RL MTL for top-off in case I get a leak (it takes 14L). Maybe MTL for complete fluid change?
The owner's manual for North America calls for MSTF 50 but the worldwide Daimler database calls for 75W-85W, so I think 50, even synthetic, is only suitable for warm/hot climates.
Charlie

unimog U500/Unicat camper


05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
88 Toyota OJ50LV OM314 motor D1 SHC
52 Dodge M37/Hercules diesel

Re: 75W-85 vs 75W-90 for MTF? [Re: m37charlie] #1544189
07/25/09 08:01 PM
07/25/09 08:01 PM
Joined: Jun 2007
Posts: 351
tampa fl
ravenchris Offline
ravenchris  Offline
Joined: Jun 2007
Posts: 351
tampa fl
Call RL, sometimes they have the answers.

Re: 75W-85 vs 75W-90 for MTF? [Re: ravenchris] #1544198
07/25/09 08:10 PM
07/25/09 08:10 PM
Joined: Dec 2006
Posts: 19,115
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 19,115
Dallas,Tx USA
If you specifically want a 75W85,swing by any Nissan dealer and get the Nissan 75W85 MTF from their parts dept.


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Quaker State Ultimate Durability 10W30

Re: 75W-85 vs 75W-90 for MTF? [Re: aquariuscsm] #1544591
07/26/09 07:50 AM
07/26/09 07:50 AM
Joined: Feb 2003
Posts: 8,756
RI
unDummy Offline
unDummy  Offline
Joined: Feb 2003
Posts: 8,756
RI
Nissan, Kia, GM, Dodge, Hyundai, Mitsubishi.....all have 75w85 GL4 fluids available. You can make your own my mixing 25% Redline MTL with 75% Redline MT90 or do the same with Amsoil's MTF/MTG.....

Until someone can show me a GL5 related yellow metal failure not caused by neglect or abuse, it has NEVER happened. BTW, in the hundreds of manuals that I've seen apart, the so-called yellow metal damage wasn't there and many had GL5 gear oil(typical dealer or quicklube bulk oil). This was before the pro-GL4 onslaught and the crybabies who don't know how to shift a manual. We used good ol' incompatible toxic to the manual transmission bulk oil for indefinitely. And, then a couple years ago, the internet created the yellow metal scare.
#*^&% the hearsay!

With 300k miles on one of my 1983 synchronized transmission, it shifted its entire life on Mobil1 GL5 75w90 gear oil with a change out during every 50k clutch job. My only manual transmission failure was caused by 'water' and wasn't saved by the GL4 that I kept it filled with, and the synchros were toast as was the fluid, bearings, bushings, gears and just about anything in contact with the water/oil/rust blob of goop lubricant.


Those who say it cannot be done, should not interrupt the person doing it.
Your automaker lied!
Is this a spelling/grammar forum or BITOG?
Re: 75W-85 vs 75W-90 for MTF? [Re: unDummy] #1544630
07/26/09 08:47 AM
07/26/09 08:47 AM
Joined: Jun 2009
Posts: 1,380
Alaska
m37charlie Offline
m37charlie  Offline
Joined: Jun 2009
Posts: 1,380
Alaska
 Originally Posted By: unDummy
during every 50k clutch job.



You needed to change your clutch every 50K miles? In 5-600K miles of manual trans driving, I've never had a clutch wear out.

Charlie


05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
88 Toyota OJ50LV OM314 motor D1 SHC
52 Dodge M37/Hercules diesel

Re: 75W-85 vs 75W-90 for MTF? [Re: m37charlie] #1544828
07/26/09 11:59 AM
07/26/09 11:59 AM
Joined: Sep 2006
Posts: 19,479
Chicago Area
mechtech2 Offline
mechtech2  Offline
Joined: Sep 2006
Posts: 19,479
Chicago Area
Since GL4 has approx. 1/2 the sulfur corrosion causing stuff as GL5, why is that not considered a problem?
It is buffered chemically to not be a problem, that's why.
And you need heat and moisture, anyway.
Most GL5s are for hypoid gear protection and they are not good with synchros. That is the real problem.

Page 1 of 4 1 2 3 4

BOB IS THE OIL GUY® Powered by UBB.threads™