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Gearbox whine, hard to shift when cold?

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Old 07-28-2015, 11:49 AM
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Caseythefalcon
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Default Gearbox whine, hard to shift when cold?

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.
Old 07-28-2015, 12:17 PM
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travlee
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fluid is the way to go... that will prob solve your problem, it has prob never been changed or checked
Old 07-29-2015, 05:05 PM
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Caseythefalcon
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Definitely, I'm gonna order some Redline MT-85. Hopefully that fixes this issue.
Old 07-29-2015, 05:10 PM
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travlee
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run to 21st century muscle cars in addison, they have it in stock
Old 07-29-2015, 05:17 PM
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nizmo_0385
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Bought my hr with 36k miles and it had cold shift issue. Switched to RL mt85 and no issues since. Now at 41k
Old 07-29-2015, 05:22 PM
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Caseythefalcon
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^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.
Old 07-29-2015, 05:42 PM
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travlee
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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
Old 07-29-2015, 08:58 PM
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mr. sparco
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Don't forget to change out the rear diff fluid while you're at it.
Old 07-30-2015, 03:42 AM
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travlee
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yeah, while you are under there it would be perfect time
Old 08-02-2015, 05:21 PM
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cincysilvias14
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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?
Old 08-03-2015, 03:13 AM
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travlee
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could be the rear diff also.
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