amsoil tranny and t-case
Nov 16, 2009, 01:21 PM
#18
At AMSOIL no test is clasiffied in Newtons as is a European class method, with that being said iam not sure where you got that data from.
AMSOIL's pour point is at -58 F, Flashes at 428 F, and iam sure that beats most oils out there.
The data you provided means nothing to us because we dont know what you are refering to, what test did you convert into Newtons since we don't measure in Newtons.
Please explain
Also as it has been stated before over and over a 75W90 is still a 90 oil it will behave like a 90 it will handle the loads perfectly fine.
The first two numbers the 75 is stating that it will flow easier inside the system that is running through, known as a multi viscocity.
Auto Manufacturers sometimes tend to neglect the small details because they don't feel like is cost effective to spend time and money into them, and oil is one of them, because Mitsu does not manufacture their own oils they sub contract them out and of course they will try and get by with the cheapest but something that will still be ok to use.
So why would mitsu spend the extra cash on a multiviscocity when they make straight oils like 90 at a low cost and high profit margine.
Now when you have companies like Mobil, AMSOIL, and others that all their efforts go towards lubrication products and don't have to worry about other products it easier to design a top quality product that still keeps a fair price tag.
AMSOIL's pour point is at -58 F, Flashes at 428 F, and iam sure that beats most oils out there.
The data you provided means nothing to us because we dont know what you are refering to, what test did you convert into Newtons since we don't measure in Newtons.
Please explain
Also as it has been stated before over and over a 75W90 is still a 90 oil it will behave like a 90 it will handle the loads perfectly fine.
The first two numbers the 75 is stating that it will flow easier inside the system that is running through, known as a multi viscocity.
Auto Manufacturers sometimes tend to neglect the small details because they don't feel like is cost effective to spend time and money into them, and oil is one of them, because Mitsu does not manufacture their own oils they sub contract them out and of course they will try and get by with the cheapest but something that will still be ok to use.
So why would mitsu spend the extra cash on a multiviscocity when they make straight oils like 90 at a low cost and high profit margine.
Now when you have companies like Mobil, AMSOIL, and others that all their efforts go towards lubrication products and don't have to worry about other products it easier to design a top quality product that still keeps a fair price tag.
I shouldn't have to explain since you're obviously an oil expert. Do some research. I suggest you look into the amount of shock load capacity each is able to handle and you'll realize that a 75W-90 (even synthetic) is not able to handle as as much as a straight 90W. There is a reason many OEM's use a straight 90W gear oil in high shock environments even though 75W-90 is the more commonly found viscosity.
Some quick info for you:
Amsoil 75W-90 tests at about 350 newtons
Mobil 1 and Redline around 250
90W mineral oils have tested above 1000
The only disadvantage is pour-point which is obviously where the synthetic 75W-90's shine. My feelings on this are if Mitsubishi felt comfortable enough to run a straight 90W I feel they know it must heat up and begin to properly flow after just a short amount of warm-up driving. Many OEM's are choosing straight 90W's including Mitsubishi, Toyota, Honda, etc. even though it is harder for the average consumer to source and its not as readily available (don't claim to make the dealerships more profit b/c Honda doesn't even sell it). Also to add, 400F is on the low end for 90W mineral oil flashpoints, I highly doubt anyone is getting their transfer case and rear differential that hot and burning up oil, my guess is if they ever actually have they broke other stuff before the oil was able to fail.
Its time you start looking at some real facts rather than just the brochures Amsoil passes out.
Some quick info for you:
Amsoil 75W-90 tests at about 350 newtons
Mobil 1 and Redline around 250
90W mineral oils have tested above 1000
The only disadvantage is pour-point which is obviously where the synthetic 75W-90's shine. My feelings on this are if Mitsubishi felt comfortable enough to run a straight 90W I feel they know it must heat up and begin to properly flow after just a short amount of warm-up driving. Many OEM's are choosing straight 90W's including Mitsubishi, Toyota, Honda, etc. even though it is harder for the average consumer to source and its not as readily available (don't claim to make the dealerships more profit b/c Honda doesn't even sell it). Also to add, 400F is on the low end for 90W mineral oil flashpoints, I highly doubt anyone is getting their transfer case and rear differential that hot and burning up oil, my guess is if they ever actually have they broke other stuff before the oil was able to fail.
Its time you start looking at some real facts rather than just the brochures Amsoil passes out.
Last edited by apagan01; Nov 16, 2009 at 01:32 PM.
Nov 17, 2009, 06:32 AM
#19
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thx, Cory
Nov 17, 2009, 03:24 PM
#22
This isn't altogether true. While GL5 does have a superior additive package for some trannies it is not designed for brass syncro trannies like the evo runs. They require a certain quality in the oil only GL4 has to run smoothly.
I ordered some GL4 and it's a huge difference. Brass syncros are specifically mentioned in the description of the MTG 75-90 GL4 on amsoil's site.
http://www.amsoil.com/storefront/mtg.aspx
AMSOIL MTG prevents the thinning effects of mechanical shear. It maintains its viscosity and superior film strength for consistent, long-lasting wear protection. MTG excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life, and is compatible with brass synchros for smooth synchromesh shift quality.
Nov 17, 2009, 04:05 PM
#23
hope this helps.
you need GL4, tranny will shift smoother with it
Last edited by apagan01; Nov 18, 2009 at 08:51 AM.
Nov 17, 2009, 04:25 PM
#24
Just wanted to say, I changed my fluids to Amsoil from Apagan01.
Great feel in the trans as my trans fluids were breaking down.
Also I didn't change the diff or tcase oil in 100,000(yes, I know, my bad)
Now the car feels much tighter.
BTW- Just for info, All of Our Ferrari's run a synthetic Shell 75-90 in the trans.
I just couldn't buy it because it was so damn expensive!
Great feel in the trans as my trans fluids were breaking down.
Also I didn't change the diff or tcase oil in 100,000(yes, I know, my bad)
Now the car feels much tighter.
BTW- Just for info, All of Our Ferrari's run a synthetic Shell 75-90 in the trans.
I just couldn't buy it because it was so damn expensive!
Nov 19, 2009, 03:35 PM
#26
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changed fluids today and tranny took all 3 qt and the tc and diffs were like .6 qts each is that the right amount ?? gonna check on fluid level like in a day or two but wanted to know roughly if thats the right amount it takes...
and wanted to add shifts feel smooth and nice.....amsoil FTW
and wanted to add shifts feel smooth and nice.....amsoil FTW
Last edited by daechul2da; Nov 19, 2009 at 04:03 PM.
Nov 30, 2009, 03:13 PM
#28
Having used stock, Motul and Amsoil engine and drivetrain fluidsI much prefer the Motul and Amsoil to stock in my MR.
I switched from Motul to Amsoil due to availability and never looked back. Performance is similar and I can get it what I need it.
I am impressed by the responsiveness of the Amsoil distributors on this forum and glad to see that they are occasionally challenged by the community then supporting their claims with what seem like facts.
And heck, I'm happy to support an American company that supports motorsports.
I switched from Motul to Amsoil due to availability and never looked back. Performance is similar and I can get it what I need it.
I am impressed by the responsiveness of the Amsoil distributors on this forum and glad to see that they are occasionally challenged by the community then supporting their claims with what seem like facts.
And heck, I'm happy to support an American company that supports motorsports.
