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Old 02-03-2018, 03:02 AM   #1
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Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
Gear lube for 2002 S10,5 speed manual trans

Having trouble finding a substitute for the GM recommended lube,P/N 9985648.
I was told that the Pennzoil Sychromesh oil,is the same.
What do Y'all think/recommend ?
Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect !
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Old 02-03-2018, 11:27 AM   #2
95 S_Trucker
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Join Date: Oct 2009
Location: Lancaster, PA
Posts: 2,087
Re: Gear lube for 2002 S10,5 speed manual trans

Pennzoil will work.

I usually just order gm stuff from the dealer. You have an NV1500 if you have a 4 cylinder. You have an NV3500 if you have a 6 cylinder. The part numbers below may be superseded.

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-99 K2500 LS CCSB 7.4
-11 GMC 2500HD SLE CCSB 6.0
-96 C3500 HD 7.4 NV4500 Rollback
-85 K10 5.7 700r4
-78 K10 5.7 4 Speed
-90 ZR1 5.7 6 Speed
-62 Lincoln Sedan 430 Auto
-61 Lincoln Convertable 430 Auto

85 Project:

78 Big10 Project:

96 Project:
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Old 02-13-2018, 12:21 AM   #3
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Join Date: Jul 2017
Location: Montana
Posts: 22
Re: Gear lube for 2002 S10,5 speed manual trans

Ames oil also makes syncomesh fluid that works. Iím not sure of the cost it might be more than gm fluid.
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