Yea thats the kind your supposed to use with the protege auto tranny

 

Actually I have a Mazda 3 and it has the same tranny as the protege so this should work good then. Thanks for the info. Oh what year protege and model is yours? Thanks

 

Redline gets from me. Changed it out today, when I went to go buy it Summit didnt have the MT-90 so I grabbed the 75-90. Anyone know the difference in the two? It still feels better then it did, I'm happy with the short-shifter now.

 

MT-90 is an SAE 75W-90 oil so you've got the viscosity right. However, Red Line 75W-90 Gear Oil is not the equivalent, or correct, replacement for MT-90 oil in our Protege transmissions. Red Line 75W-90 contains friction modifiers that make the oil too slippery for rapid and optimal synchro engagement. The proper Red Line oil (short of MT-90) is their 75W-90NS Gear Oil that does not contain friction modifiers and therefore insures optimal synchro engagement.

For more information:
www.redlineoil.com
www.clubprotege.com/forum/showthread.php?t=11672