01-19-2021, 08:55 AM | #1 |
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6MT F80 3rd to 4th Gear Shift Problems
As the title says, I have a 6MT/FBO/Cary Tuned/MY18 F80 Comp pack with 25k miles and my 3rd gear to 4th gear shift under normal driving (as well as WOT) has a hesitation and doesn't have that clean "click" like it used to. It's not quite a grind but it doesn't consistently go in clean if that makes any sense. Anyone else having issues like this? Driven stick my whole life, so I like to think I know how to properly drive a manual. Are my synchros going? Will my warranty cover it? Pic for attention. Thanks for any info.
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01-19-2021, 02:54 PM | #2 | |
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If it was me, i would first change the transmission fluid and see how it goes from there. Also inspect your transmission mounts. |
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01-19-2021, 05:33 PM | #3 |
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Rogue engineering trans mounts.
Maybe you're trans is shifting under load and hard to catch the gate. E tunes have a lot of torque. Sometimes my catching 2nd can feel a little off. I'm going to try this.
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'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
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01-20-2021, 10:13 AM | #4 | |
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After some research, looks like BMW considers 6MT tranny fluid "lifetime" despite a lot of owners changing this fluid <25k miles and finding metal shavings in it. Will probably be my next move to change it out and see if it fixes the problem. Has anyone had any luck having the dealer swap this under warranty? If not I'll probably do it myself. |
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01-20-2021, 04:20 PM | #5 | |
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also, yes, try changing the fluid, but if your car being so new, not sure if it will help. I hope I'm wrong. At least its a real easy job if you have access to jack stands or a lift. Also, are you stepping on the clutch all the way? |
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01-20-2021, 08:38 PM | #6 |
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I changed my 6MT gearbox oil at 40K miles. It was a little dark but no metal. I refilled with RedLine DCTF (1.1L). Yes, Redline says use DCTF in our manual gearbox. All good for the last 7K miles!
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'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
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c4ss103.50 |
02-10-2021, 11:07 AM | #7 | |
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3rd, 4th, 6mt, gear, manual, problems, shift, synchros |
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