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jcondo · 09-21-2018, 11:48 PM

77 k10 TH350 with a NP203 transfer case.
what oil is supposed to be in the transfer case? I was told 10w-30, but the oil in it currently smells more like a rear end oil and is much thicker feeling then 10w-30.

09-21-2018, 11:48 PM	#1
jcondo Registered User Join Date: Sep 2018 Location: estherville, IA Posts: 61	Np203 oil 77 k10 TH350 with a NP203 transfer case. what oil is supposed to be in the transfer case? I was told 10w-30, but the oil in it currently smells more like a rear end oil and is much thicker feeling then 10w-30.