Can we go to a heavier transmission fluid?
01-14-2010, 07:38 AM
#12
I tried both redline oils before trying GMSFM. Redline MTF was too thin, MT-90 was too thick, and GMSFM was perfect. I was also able to go 15K+ between changes of GMSFM without any noticeable degradation in shifting feel. However, this was with my '02 AP1. I plan to try GMSFM in my '08 in the next couple weeks.
01-15-2010, 11:06 AM
#14
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I run GMSFM, since I found MTFII gave me around 10k. but GMSFM was even smoother than new MTFII after 10k its still rougher than I like.
FWIW-I found LE (110) for the diff was too thick at 20F! This doesn't match the specs. I could actually hear the whine and it would clunk in tight backing when cold. I'll run a winter and a summer weight from now on.
FWIW-I found LE (110) for the diff was too thick at 20F! This doesn't match the specs. I could actually hear the whine and it would clunk in tight backing when cold. I'll run a winter and a summer weight from now on.
01-16-2010, 03:12 AM
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INTJ Posted on Jan 15 2010, 09:06 PM
LE-1605 has - or should have 
- a pour point of -11F.
Did the noise go back to normal after some warming up?
IMO there are 75W-110/140 oils available that will work year round for you.
What if one would just stick to the manual - as many do with 10W-30 - and use SAE 90 in the diff....
The few single grade SAE 90 oils around are dino and would have simular pour points.
Oh well...
FWIW-I found LE (110) for the diff was too thick at 20F! This doesn't match the specs. I could actually hear the whine and it would clunk in tight backing when cold. I'll run a winter and a summer weight from now on.
- a pour point of -11F.Did the noise go back to normal after some warming up?
IMO there are 75W-110/140 oils available that will work year round for you.
What if one would just stick to the manual - as many do with 10W-30 - and use SAE 90 in the diff....
The few single grade SAE 90 oils around are dino and would have simular pour points.
Oh well...
01-17-2010, 02:20 PM
#16
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Originally Posted by SpitfireS,Jan 16 2010, 04:12 AM
INTJ Posted on Jan 15 2010, 09:06 PM
LE-1605 has - or should have - a pour point of -11F.
Did the noise go back to normal after some warming up?
IMO there are 75W-110/140 oils available that will work year round for you.
What if one would just stick to the manual - as many do with 10W-30 - and use SAE 90 in the diff....
The few single grade SAE 90 oils around are dino and would have simular pour points.
Oh well...
LE-1605 has - or should have
- a pour point of -11F.Did the noise go back to normal after some warming up?
IMO there are 75W-110/140 oils available that will work year round for you.
What if one would just stick to the manual - as many do with 10W-30 - and use SAE 90 in the diff....
The few single grade SAE 90 oils around are dino and would have simular pour points.
Oh well...
01-18-2010, 07:19 AM
#18
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Originally Posted by SpitfireS,Jan 14 2010, 05:22 AM
I'm using the ATM now and I like it, smoother than GMFSM.
Time will tell, so far only 2500 km.
But ATM is only 9.6 cSt.
The Redline MT-90 has specs closer to what you are looking for IMO.
So does the Amsoil MTG (75W-90 GL-4).
Time will tell, so far only 2500 km.
But ATM is only 9.6 cSt.
The Redline MT-90 has specs closer to what you are looking for IMO.
So does the Amsoil MTG (75W-90 GL-4).
Amsoil: http://www.amsoil.com/storefront/mtg.aspx
Redline: http://www.redlineoil.com/product.aspx?pid=46&pcid=7
01-18-2010, 09:39 AM
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Saki GT Posted on Jan 18 2010, 05:19 PM
Yes, those are the 2 oils I was talking about.
Those are the 2 I would try if I was in your situation.
I also have to agree with camuman, if it gets cold where you are it might shift
until it warms up.
Just to stir things up a bit
have you tried the Amsoil MTF yet?
According to the Pennzoil website its dino oil.
Who knows how shear stable it is.
INTJ Posted on Jan 18 2010, 12:20 AM
My point was that the manual does not mention using a thinner gear oil (for the diff or transmission) in colder climates, as they do with engine oil.
IOW, they probably think its no problem.
Btw.. LE-1605 is within 1999 SAE 90 gear oil spec.
This is what you recommend Spitfire?
Those are the 2 I would try if I was in your situation.
I also have to agree with camuman, if it gets cold where you are it might shift
until it warms up.Just to stir things up a bit
have you tried the Amsoil MTF yet?
Regarding GMSFM, I heard there is a Pennzoil equivalent - does anybody know about that?
Who knows how shear stable it is.
INTJ Posted on Jan 18 2010, 12:20 AM
Nothing wrong with the 90..
IOW, they probably think its no problem.
Btw.. LE-1605 is within 1999 SAE 90 gear oil spec.
01-18-2010, 10:32 AM
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I have tried the Amsoil MTF and found that when the car is cold it shifted a bit hard. I have since changed to the Honda MTF2 and find this to be the best for me so far. As cheap as it is and the amount of miles I put on in a year it doesnt really matter how long it lasts.
I'm wondering if mixing the two would yeild positive results.
I'm wondering if mixing the two would yeild positive results.