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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#1729 07/23/2004 12:46 AM | Joined: Jul 2004 Posts: 1 Junior Member | | Junior Member Joined: Jul 2004 Posts: 1 | I am waking up a 64 K10 fromm a several winters nap, and want to change all the fluids, what type of goo goes in the T case and 4 speed tranny? I have had the wrong lube cause a ceased tranny in an S10 is the only reason i ask. thanks for the help. | | |
#1730 07/23/2004 12:57 AM | Joined: Nov 2003 Posts: 53 Member | | Member Joined: Nov 2003 Posts: 53 | 90w gear lube (usually marked "universal" or "multi-purpose") is specified for both your SM420 4 speed and Rockwell transfer case. That's another nice thing about our older trucks....90w is used in the transmission, transfer case, both axles, and the front axle joints. In the 70's they started the confusing habit of specifying 30w motor oil and ATF in some models. | | |
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