2000 2Dr Blazer 4x4 Zr2 5 Speed 4.3L V6 what fluid should i use and is there any additives i should use? anyone else have a 5 speed blazer ive seen about two in my life second one i saw i bought i have 95k miles dont think the fluid has ever been changed any imputs??

 

For your 5 speed, the owner's manual says Synchromesh Transmission Fluid (GM Part No. 12345349 or equivalent)

 

thank you !!!

 

I bought my 5-speed Blazer two months ago. I've changed the differential lube, and transmission lube is next.

 

Do yourself a favor and check to see just how often you need to change the fluid in a 5 speed tranny.

Just saying.