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motormilitia · 02-18-2011, 10:14 AM

The NP-205 uses GL5 gear oil like a differential, the 700R4 uses ATF. On a stock truck, the adapter between the trans and t-case will have gaskets on both sides to prevent the oils from mixing.

02-18-2011, 10:14 AM	#6
motormilitia Registered User Join Date: Nov 2008 Location: Everett, WA Posts: 33	Re: 700R4/NP-205 Fluid question??? The NP-205 uses GL5 gear oil like a differential, the 700R4 uses ATF. On a stock truck, the adapter between the trans and t-case will have gaskets on both sides to prevent the oils from mixing.