When I go to start my Z up when the engine is cold, it's very hard to shift. After letting it warm up for a few minutes, shifting is still tough, but manageable. Now when I get going a whine occurs and the pitch of the whine matches the rpms. After driving for 15-20 minutes, the whine fades and shifting becomes easier. The Z is an 03 touring with 93k miles. I believe am going to flush the tranny and put some redline mt-85 in within the next week or two. Any ideas or suggestions on a better move? The tranny doesn't grind in any gear and feels awesome once it's warmed up. Also, it has a brand new Z1 lightweight clutch and flywheel. Any help would be much appreciated. Thank you.

 

fluid is the way to go... that will prob solve your problem, it has prob never been changed or checked

 

Definitely, I'm gonna order some Redline MT-85. Hopefully that fixes this issue.

 

run to 21st century muscle cars in addison, they have it in stock

 

Bought my hr with 36k miles and it had cold shift issue. Switched to RL mt85 and no issues since. Now at 41k

 

^good to here! And I will have head out there pretty soon. Sick of having to wait 10 minutes to drive and feeling like I'm going to brake my tranny.

 

i will be swapping out the fluid in my trans and diff next week with redline... about $100 for 7 quarts total for the vette

 

Don't forget to change out the rear diff fluid while you're at it.

 

yeah, while you are under there it would be perfect time

 

so let me ask you this travlee. I get a pretty gnarly constant whine from about 2-3200ish rpm i noticed fluid was low but could it be that through the entire box? also i have amsoil dot 3 fluid thoughts on that?

 

could be the rear diff also.