Saginaw 3-speed Transmission Capacity - The 1947 - Present Chevrolet & GMC Truck Message Board Network

thefatguy · 02-09-2009, 12:14 PM

Title kinda says it all. I repaired the rear oil seal in my 1969 GMC half-ton, and now I need to know how much to buy to fill it back up.

I imagine that I fill it up to the bottom of the fill hole, but how much is that? I can't find it in any of my books, and I'd rather not have a(nother) bottle of stuff sitting around collecting dust, nor do I want to make two or three trips because I didn't get enough.

Any help out there?

**Wrenchbender Ret** · 02-09-2009, 12:55 PM

It will hold 3 pints when empty. Now would be a good time to pull the bottom plug & change it all. Yes you fill it to the level of the plug on the side.

**Green Machine** · 02-09-2009, 03:10 PM

Most (all ?) do not have a drain plug, remove the bottom tailshaft bolt, that will drain most of it out. Put some sealer on the bolt before you re-install it.

thefatguy · 02-09-2009, 05:20 PM

Mine had a drain plug, so it was already drained. I got my three pints in, and only one half-full quart bottle left over. Man, that fill hole isn't easy to use. But, the way I figure it, I've now got another 150,000 miles before I worry about it again.

02-09-2009, 12:14 PM	#1
thefatguy Registered User Join Date: Sep 2008 Location: San Antonio, TX Posts: 55	Saginaw 3-speed Transmission Capacity Title kinda says it all. I repaired the rear oil seal in my 1969 GMC half-ton, and now I need to know how much to buy to fill it back up. I imagine that I fill it up to the bottom of the fill hole, but how much is that? I can't find it in any of my books, and I'd rather not have a(nother) bottle of stuff sitting around collecting dust, nor do I want to make two or three trips because I didn't get enough. Any help out there? __________________ 1978 Silverado Big 10 - "The River Runner" 1969 GMC C/10 - "The 2008-09 Winter Project"

02-09-2009, 12:55 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,193	Re: Saginaw 3-speed Transmission Capacity It will hold 3 pints when empty. Now would be a good time to pull the bottom plug & change it all. Yes you fill it to the level of the plug on the side.

02-09-2009, 03:10 PM	#3
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: Saginaw 3-speed Transmission Capacity Most (all ?) do not have a drain plug, remove the bottom tailshaft bolt, that will drain most of it out. Put some sealer on the bolt before you re-install it. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0

02-09-2009, 05:20 PM	#4
thefatguy Registered User Join Date: Sep 2008 Location: San Antonio, TX Posts: 55	Re: Saginaw 3-speed Transmission Capacity Mine had a drain plug, so it was already drained. I got my three pints in, and only one half-full quart bottle left over. Man, that fill hole isn't easy to use. But, the way I figure it, I've now got another 150,000 miles before I worry about it again. __________________ 1978 Silverado Big 10 - "The River Runner" 1969 GMC C/10 - "The 2008-09 Winter Project"



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