As the topic states, wondering whether I should use the Synchromesh, here: http://www.amsoil.com/storefront/mtf.aspx
or this one: http://www.amsoil.com/storefront/mtg.aspx


Aren't they both compatible?

Thanks

 

I use Synthetic Manual Synchromesh Transmission Fluid (MTF)

 

Amsoil MTF

It is strange (confusing) Amsoil used an engine oil viscosity spec (5W-30) for gear oil though.
Also, 5W-30 is not 1/3 of 75W-90.
The 5W-30 is about 25-30% thinner, that's all.

 

Thanks for the responses. I'm almost positive the 75W-90 is what I have in my car right now and am gearing up to buy more for a CR that I'm buying

Do people use the 75-90 for race applications or cars in hot climates?

 

One small correction:
- Amsoil MTF (5w-30) is 9.6 cSt @ 100C
- Amsoil MTG (75W-90) is 14.8 cSt @ 100C

That makes MTF 35% thinner than MTG - MTG as reference.

Looking at both specs a bit closer I think MTF is the better fluid though.
The 4-ball wear test (yes it does make sense in gear oils - not for engine oils) gives a better result with MTF.
MTF - 0,40mm scar
MTG - 0,45mm scar

And the copper corrosion test is also better with MTF, it gets the lowest rating, 1A
MTG gets 1B.

I would go for the synchromesh formulated oil, even in a CR.

P.S. maybe you should pay more attention to diff oil

 

Thanks Spitfire! I'll go with Synchromesh in both cars. I have LE in my current diff but am going to switch to Amsoil's SevereGear 75w110. Sound good?

 

What is the longest lasting trans fluid for a '06 ? Can you mix two, like 1qt. of MTG and 1qt. of MTF from Amsoil and get longer life. I put a lot of miles on my car(34k miles a year) in 100 deg. heat in the summer and down to the mid 30's in the winter and I don't like to have to change the fluid in the transmission every 8k miles.

ROD

 

Is the standard Honda MTF solid enough?

 

Absolutely - it's just not the best

 

Not the best argument. You realize that 30% is roughly 1/3, right (35% even more so)?

Take a look at the existing tranny fluid threads.