So i changed my transmission fluid for the first time at about 16xxx miles yesterday. I was on the highway tonight and my 3rd to 4th gear shift grinded on 2 separate pulls. I used Amsoil 75w-90 in the trans. Before the fluid change it was shifting fine. Do you guys think the grinding is caused by too much fluid? I may have overfilled it. Not by much but i put in 3qts with some of it spilling.

 

you cant possibly overfill it because it'll just pour right out, lol. I don't know maybe amsoil sucks. If you spilled some then your topped off.

 

Which Amsoil did you use? Amsoil MTG or other?

 

 

did you drain and fill the correct areas? what guide did you follow?

 

Can't go wrong with OEM fluids for drivetrain components. I would dump it and put Mitsubishi fluids back in.

 

i have penzoil syncromesh and my tranny shifts like butter..

 

i have the same problem..but i did royal purple 75 90 ...its all i had and i was too stubborn to change it

 

Thats the correct oil for the transmission. I am using that and have no issues.

 

I'm using this also with no issues.

 

after filling, you need to drive the car and then refill.

 

I followed the Evomoto guide and filled it through the engine bay with a funnel and tube. I'll have to check to see if I over or underfilled it, but my question is could that be the reason why its grinding?

 

Um.... no you don't. It takes just under 3 bottles.

I tried the above pictured AMSoil and didn't care for it either. Very notchy and crunchy when cold. I switched back to stock (($$$)) fluid and its back to feeling normal again.

I know many people run the AMSOil without issue but it didn't play nice in my tranny.

 

That's interesting because I switched FROM stock to Amsoil because stock was too notchy when cold but the Amsoil was not.

 

I guess its just like everything else... when you find something you like stick with it.