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Old 09-07-2005, 02:39 AM   #2
rwgregory
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Join Date: Apr 2005
Location: Chula Vista, California
Posts: 495
If it's getting hard to shift have you checked your clutch adjustment lately? If that's
ok, try putting a few ounces of Pro-long differential & manual trans additave in the
gearbox. That stuff worked wonders on the 4-spd. in my Mercedes Coupe. I thought
I needed new synchros but after a gear-lube change w/Pro-long it now shifts as
smooth as butter. FYI, any good petroleum based gear oil will work just fine in your
trans. Whatever better auto parts stores carry. Good luck.
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rwgregory

67 GMC 2500 ,2w/d wide box
305 V-6, 4-speed
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