Manual Transmission Fluid
#1
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Manual Transmission Fluid
I did a couple searches and couldn't find exactly what i was looking for. I have a couple questions.
What is on of the better synthetic transmission fluids I can put into my 1995 manual transmission 4runner?
How many qts do i need for the manual transmission?
Thanks!
What is on of the better synthetic transmission fluids I can put into my 1995 manual transmission 4runner?
How many qts do i need for the manual transmission?
Thanks!
#2
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Check out Amsoil.com
They have an application page that will tell you exactly how many quarts. You can use either their severe gear or, if you want a "true" manual transmission fluid, their mtg stuff. I think the difference is that a true manual transmission fluid has additives for better shifting and synchomesh life while a true gear lube has more high-pressure additives.
They have an application page that will tell you exactly how many quarts. You can use either their severe gear or, if you want a "true" manual transmission fluid, their mtg stuff. I think the difference is that a true manual transmission fluid has additives for better shifting and synchomesh life while a true gear lube has more high-pressure additives.
#3
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Amsoil is probably one of the best synthetics, but I'm not going to start a flame war over which is better; they are ALL better than standard dino oil. Redline & Royal Purple are highly rated as well.
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D45J (04-07-2019)
#4
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I put some Redline MT-90 in my tranny the other day. I paid 10$ a qt by the way. 1qt in the t cast and 2.3 in the tranny.
Make sure its gl-4 tho, gl-5 is too slippery. (someone make sure i didnt get those mixed up, the gl part)
MAKE SURE TO GET THE FILL BOLT OFF BEFORE YOU GET THE DRAIN OFF!
Make sure its gl-4 tho, gl-5 is too slippery. (someone make sure i didnt get those mixed up, the gl part)
MAKE SURE TO GET THE FILL BOLT OFF BEFORE YOU GET THE DRAIN OFF!
Last edited by Tubbyfatty; 09-02-2009 at 08:50 AM.
#5
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Yeah you got it right Tubby. GL-4 is what you want, GL-5 doesn't work well with the synchro's.
I used Redline MT-90 in my 92 Pickup and it is good stuff, definitely improved shifting, but I think the PO had GL-5 in it.
Not sure if the MT-90 is the best way to go for the transfer case though. I think a GL-5 gear oil is better for Xfer cases, but stil MT-90 is better than most stuff you will find out there anyway, so your Xfer case should like it OK.
I used Redline MT-90 in my 92 Pickup and it is good stuff, definitely improved shifting, but I think the PO had GL-5 in it.
Not sure if the MT-90 is the best way to go for the transfer case though. I think a GL-5 gear oil is better for Xfer cases, but stil MT-90 is better than most stuff you will find out there anyway, so your Xfer case should like it OK.
#7
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I've read this thread and others where there is conflicting information, so I'm a little confused. I have two questions:
1) Why is GL-5 too slippery if it's listed in my Haynes and FSM as an acceptable MT fluid? Also, others here at YotaTech recommend GL-5.
2) I just bought Mobil 1 Synthetic GL-5/MT-1 75W-90 severe gear lube for my MT. Is that a bad choice, and why?
Thanks.
1) Why is GL-5 too slippery if it's listed in my Haynes and FSM as an acceptable MT fluid? Also, others here at YotaTech recommend GL-5.
2) I just bought Mobil 1 Synthetic GL-5/MT-1 75W-90 severe gear lube for my MT. Is that a bad choice, and why?
Thanks.
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#10
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On the flipside of that, I also don't see much wisdom in making the switch to synthetic and then going back!
#11
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Well, I did some more research on teh internets, and came across the ASTM standard for MT-1. You have to buy the full article, but the abstract does say something important: http://www.astm.org/Standards/D5760.htm
I may have been blind but I didn't notice that before. So, though the M1 75W-90 gear oil would probably work in my truck, the transmission is original with 270k miles on it. The synchros are already a little rough, so I'm going to go for something that has specific properties to take care of them.
Does anyone know where I could pick up some Red Line MT-90 in the Seattle area?
This specification provides a list of test methods and acceptance criteria for determining the performance acceptability of gear lubricants used in nonsynchronized heavy duty manual transmission (MT-1).
Does anyone know where I could pick up some Red Line MT-90 in the Seattle area?
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