Maverick:
Yes at least the 75W140 Amsoil Syn is rated API GL-5, that what I run in mine. I think Eaton recommends this weight for heavy towing.
Ed
Enthusiast
Maverick:
Yes at least the 75W140 Amsoil Syn is rated API GL-5, that what I run in mine. I think Eaton recommends this weight for heavy towing.
Ed
GMC 3500 D/A 4x4, SLT<br />Running Boards, Lucerix Mirrors, gauges,CB,Street Pilot III w/outside antenna, Jordan Brake Controller,U.S.Gear Exhaust Brake,Amsoil Air and Dual Remote Oil Filter,Rhino Bed Liner, Mud Flaps.<p><a href=\"http://www.picturetrail.com/Edmac\" target=\"_blank\">Pictures</a>
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