Again i m in trouble!! my car is killing me

[Avick]

I think i have to replace my transmission for my infiniti i30, i just wanted to know that, there r 2 types of transmission: 1- At locking differential 2-Al unlocking differential. the question is how wud i come to know which one it is.
FYI 2001 infiniti i30

[Markc]

Vehicle identification number will tell you whether or not you have limited slip. Most I30"t's" come with limited slip.

[loystock]

What makes you think you need a new transmission? Some transmission issues can be corrected by doing a pan drop, cleaning the pan and magnets and replacing the filter; flushing the transmission fluid; replacing solenoid/ sensor, etc. Symptoms and proper diagnostic can isolate the problem. I have a 97 & 99 I30s and both of them have original transmissions. I replace the fluid every 2 years and add a bottle of Lubegard Red each time.

[Presscott707]

What Loystock said is all good true stuff. Also some times a bad motor mount could make the transmission shift really hard like its going bad.