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Old 04-28-2003, 05:04 PM   #1
stllookn
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12 Bolt Posi-lube?

I was going to change the oil in my 12 bolt posi rearend and am wondering what lube is best for this beast. I thought there was a special lube used for the posi rearends.
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'68 C20 Longhorn 50th Anniversary 400/TH400
'68 C20 Longhorn 50th Anniversary 468/TH400w/buckets
'72 C20 Halfhorn (Longhorn w/o cab and front clip)
'69 Flxible Cruiser (look up ugly in the dictionary)
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Old 04-28-2003, 05:11 PM   #2
1971Stepside
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there is a special lube. When I ordered mine from Randy's Ring and Pinion they sent me a little bottle of Ford posi lube!!! I complained, but they said it was good stuff. Geez, I still think that was just wrong.
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1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021.

"I can't complain, but sometimes I still do. Life's been good to me so far."
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Old 04-28-2003, 05:37 PM   #3
stllookn
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LOL...I know what you mean. I will try the GM service book and see what they say.
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'68 C20 Longhorn 50th Anniversary 400/TH400
'68 C20 Longhorn 50th Anniversary 468/TH400w/buckets
'72 C20 Halfhorn (Longhorn w/o cab and front clip)
'69 Flxible Cruiser (look up ugly in the dictionary)
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Old 04-28-2003, 06:56 PM   #4
cdowns
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just go to the gm dealership and ask at the parts counter you add it to your regular rear end grease
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