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Old 06-18-2011, 01:01 PM   #1
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Default Is there a remedy to bad synchros?

I just put in another tranny because I blew out 3rd in the old one. Come to find out that this new tranny has worn to hell synchros. Does running any type of gear oil help this at all?
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Old 06-18-2011, 01:14 PM   #2
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Try GM's SynchroMesh. If that doesn't work, I'd say just buy another cheap tranny and cross your fingers.
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Old 06-18-2011, 02:19 PM   #3
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I had a click/notchiness in third gear, not a full on grind. I tried mobil 1, redline, royal purple pen15, oem, and finally ended on ford motorcraft (part # XT-M5-QS). Immediately there was a difference but after 1k miles the click is completely gone.

I've never tried GM synchromesh but I'd give either the motorcraft or GM stuff a try and see if it fixes it.
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Old 06-18-2011, 06:44 PM   #4
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I put the synchromesh in the tranny . It shifts a better . I was able to grab second at redline pretty quick without to much trouble. With the other tranny oil it would grind for a split second now it is on the verge of grinding. Oh well. I will just have to live with it until I blow out another tranny
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Old 06-18-2011, 08:20 PM   #5
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Wow dude, you move quick. Six hours later?
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Old 06-18-2011, 09:59 PM   #6
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I liked the Motorcraft stuff. Helped a bunch on my trans
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Old 06-18-2011, 10:33 PM   #7
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6 speeds go boom?
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Old 06-19-2011, 04:00 AM   #8
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Hahaha yeah as soon as I heard synchromesh is the best for this problem I ran straight to auto zone and grabbed some
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