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Old 05-28-2008, 09:44 PM
 
Location: Earth
4,214 posts, read 11,877,433 times
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I know after awhile an automatic transmission quits working. How long do manual transmissions go until they go out?
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Old 05-28-2008, 09:50 PM
 
Location: SF Bay Area, CA
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My semi-retired '89 Nissan Pulsar has no tranny problems at 268,000 miles, and I drove it pretty hard. Other sticks I've had also had no problems - Subaru at 140k, Volvo wagon at 145k, a couple of VW bugs (trannys outlasted the vw engines every time). YMMV.
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Old 05-28-2008, 09:58 PM
 
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It's the clutch that wears out....the tranny itself should last near forever, as long as there's lube in it and you don't grind gears or downshift a lot at high speeds.
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Old 05-28-2008, 10:03 PM
 
Location: Lake Forest, CA
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Most manual transmissions don't quit working, ever. They are a much simpler mechanism than an automatic transmission. Even if the gear oil in the manual transmission is left in for a decade, chances are that it will work OK. The clutch which engages the manual transmission to the engine can wear out if the operator does not know how to shift properly, or if the car is driven in a lot of stop and go driving or in a lot of hills. I have owned cars with manual transmissions that had 200K miles on the original clutch.
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Old 05-28-2008, 10:06 PM
 
Location: Earth
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That's what I was thinking. I know the clutches do wear out after awhile. But I wasn't sure how long the gear box goes on for.

Car54, how does the downshifting at high speeds wear out the trans?
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Old 05-28-2008, 10:14 PM
 
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Quote:
Originally Posted by Deez Nuttz View Post
That's what I was thinking. I know the clutches do wear out after awhile. But I wasn't sure how long the gear box goes on for.

Car54, how does the downshifting at high speeds wear out the trans?

It's hard on the synchronizers.
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Old 05-29-2008, 12:05 AM
 
Location: Chicago
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How long a transmission lasts will depend a lot on use. If you do a lot of city driving, you're more apt to need synchros rebuilt (especially 1st and 2nd), though it would only happen once during the life of a car, if at all. And technically you could even get by without the synchros if you know what you're doing. If you do mostly highway driving where you rarely stop until you get to your destination, a properly maintained manual transmission should never need to be rebuilt/replaced. You'll also want to make sure any motor mounts going bad are promptly replaced too; if the motor sags too much you're liable to strip 1st or, more likely, reverse.
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Old 05-29-2008, 05:26 AM
 
Location: Earth
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Quote:
Originally Posted by car54 View Post
It's hard on the synchronizers.
Thanks where is the fine line on downshifting?

I do sometimes drop it in 3rd if doing 50 as my little truck is underpowered but not often do I do it.
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Old 05-29-2008, 05:45 AM
 
Location: Cold Frozen North
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I would think that when a stick transmission needs repair, the costs would be substantially less. I have 3 stick cars and a big rig with an 18 speed and love running through the gears. It makes you feel like you're more involved with driving the vehicle instead of being a passenger.
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Old 05-29-2008, 06:49 AM
 
Location: NH. NY. SC. next move, my ground condo
3,542 posts, read 9,013,612 times
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Quote:
Originally Posted by car54 View Post
It's the clutch that wears out....the tranny itself should last near forever, as long as there's lube in it and you don't grind gears or downshift a lot at high speeds.

I completely agree. the clutch should be the only thing you will ever need to replace.
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