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Old 02-05-2015, 12:26 PM   #1
GreenBay1921
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Water in tranny???

I have a '68 with a 250, 3 on the tree. I pulled the side plug to check the gear oil in tranny, & it was bad looking. So I decided to pull the bottom plug to drain it out & refill with fresh oil. When I pulled the plug, a good 8-10 oz. of clean water poured out, then the nasty brown gear oil came. Is this normal? ....truck has been sitting for over 20 years...
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Old 02-05-2015, 12:45 PM   #2
67 cst swb
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Re: Water in tranny???

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Originally Posted by GreenBay1921 View Post
....truck has been sitting for over 20 years...
Entirely possible. Years of condensation and who knows, maybe it was driven through a crystal clear creek the day before it was parked ???
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My Trucks:
1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project
1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver
1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck
1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck
2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White
2002 Chevrolet 1500HD 4x4 Crew Cab 6.0L 4L80E Red

Last edited by 67 cst swb; 02-05-2015 at 12:53 PM.
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Old 02-05-2015, 12:48 PM   #3
frankslagoon
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Re: Water in tranny???

could only be two things. either the tranny was under water or condinsasion can,t spell that one. some of the trannys did not have a breather on top. might be alittle rust in there. If ya get a chance to look inside might be a good idea.
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Old 02-05-2015, 12:50 PM   #4
GreenBay1921
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Re: Water in tranny???

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Originally Posted by 67 cst swb View Post
Entirely possible. Years of condensation and who knows, maybe it was driven through a crystal clear creek the day before it was parked ???
....I kid you not, it was crystal clear. I had driven the truck about 10-15 miles, while in the process of fixing her back up, before I pulled the plug. I would have thought it would have mixed a little?, but it was clear. Should I just refill it, or do I need to try to clean it out?
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Old 02-05-2015, 12:53 PM   #5
67 cst swb
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Re: Water in tranny???

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....I kid you not, it was crystal clear.
I outta be a under cover FBI type guy.
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My Trucks:
1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project
1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver
1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck
1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck
2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White
2002 Chevrolet 1500HD 4x4 Crew Cab 6.0L 4L80E Red
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Old 02-05-2015, 01:06 PM   #6
frankslagoon
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Re: Water in tranny???

might be a good idea to run it acouple minutes with some tranny fluid or some diesel and then drain it and fill
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Old 02-05-2015, 02:16 PM   #7
Fitz
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Re: Water in tranny???

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I outta be a under cover FBI type guy.
Another Walter Mitty!
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Old 02-05-2015, 04:06 PM   #8
cooperhw
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Re: Water in tranny???

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Originally Posted by frankslagoon View Post
might be a good idea to run it acouple minutes with some tranny fluid or some diesel and then drain it and fill
My Dad used to swear by this^^
He would drain out the old oil and fill em up with an ATF and run em about 20 miles. Drain all that out and be good to go.
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