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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: 77 Shorty on October 07, 2011, 08:31:16 pm

Title: What oil in 203?
Post by: 77 Shorty on October 07, 2011, 08:31:16 pm

What oil should i be running in my 77 with a 203 partime 4x4 transfercase?

Title: Re: What oil in 203?
Post by: jdl71 on October 07, 2011, 08:50:40 pm

A 203 is full time unless it's had a part time kit put in it. It uses motor oil, not gear oil or ATF. Can't speak for the part time conversions though.

Title: Re: What oil in 203?
Post by: beastie_3 on October 08, 2011, 12:04:27 am

same stuff. 10w30 or 10w40