manual trans fluid

[nsmitchell]

It must be the new manual trannys, but in all the manuals I've ever done, I just used a normal motor oil like Mobil-1 10W-30. They all shifted like a dream! 75W-90 is some thick stuff. I wonder why it needs to be so thick?

[ttufrosty]

I too am looking to go to AMsoil 75W-90, I did find these two topics on the Scions. At least they are a starting point on what to do if you need a visual reference.

Changing an Xb
http://s49.photobucket.com/albums/f2...0Oil%20Change/

Changing a tC
http://www.scionlife.com/forums/viewtopic.php?t=120673

[Black Yaris]

Originally Posted by nsmitchell

It must be the new manual trannys, but in all the manuals I've ever done, I just used a normal motor oil like Mobil-1 10W-30. They all shifted like a dream! 75W-90 is some thick stuff. I wonder why it needs to be so thick?

Don't know what kind of manuals you drove but every manual I know of either takes gear lube (75w-90, 75w-140, etc), or many mazda/ford manual trannys actually take ATF.

Originally Posted by ttufrosty

I too am looking to go to AMsoil 75W-90, I did find these two topics on the Scions. At least they are a starting point on what to do if you need a visual reference.

Changing an Xb
http://s49.photobucket.com/albums/f2...0Oil%20Change/

Changing a tC
http://www.scionlife.com/forums/viewtopic.php?t=120673

I just changed mine to Amsoil as well, after I got my car up on ramps and saw the large fill and drain plugs plainly labled "see owners manual before refilling"... it was a simple job with the beer bong funnel to fill her up...

[ttufrosty]

Here is another topic from Scionlife with lots of info on changing the manual tranny fluid as well as info on particular gear oil to use.

http://www.scionlife.com/forums/view...n+oil&&start=0

[hystria]

Syncromesh Friction Modified sell by GM for manual Corvette transmissions will help having smoother gear shifting after a while

[WolfWings]

Originally Posted by Black Yaris

Don't know what kind of manuals you drove but every manual I know of either takes gear lube (75w-90, 75w-140, etc), or many mazda/ford manual trannys actually take ATF.

3rd-gen Civic manual transmissions specified 30W engine-oil for the transmission, actually. Not 10W-30, 30W. And not gear oil, motor oil. Single-grade motor oil, in a transmission. Still want one of those again.

They also happened to specify that for the engine itself as an option in climates that didn't get below 20F/-7C, so on my '86 Civic I had straight 30W oil in the entire vehicle.

[WolfWings]

Originally Posted by nsmitchell

It must be the new manual trannys, but in all the manuals I've ever done, I just used a normal motor oil like Mobil-1 10W-30. They all shifted like a dream! 75W-90 is some thick stuff. I wonder why it needs to be so thick?

Hell, old 3rd-gen Civic manual transmissions recommended 30W engine oil in the transmission, and the engine if you lived in temperate and mild climates. Made it insanely-cheap to just change all the fluids every oil change, since 30W is just about bottom-barrel for price.