The Ford Barn - View Single Post - Previous Owner filled Steering Box with Grease

Uncle Bob · 04-07-2013, 11:58 AM

Tom, since you're one of the more open minded on these matters just a commentary on your Mobil 636 portion. That's an ISO 680 viscosity grade which is quite viscous. The next grade down in Mobil's offerings is the 634 which is an ISO 460 which is in the same viscosity range as the 600w (which in turn most correlates with the middle range of an SAE 140 gear lube viscosity wise, the 680 is at the high end and beyond of that range).

04-07-2013, 11:58 AM	#37
Uncle Bob Senior Member Join Date: May 2010 Location: Salado, TX. Posts: 733	Re: Previous Owner filled Steering Box with Grease - Up a Creek? Tom, since you're one of the more open minded on these matters just a commentary on your Mobil 636 portion. That's an ISO 680 viscosity grade which is quite viscous. The next grade down in Mobil's offerings is the 634 which is an ISO 460 which is in the same viscosity range as the 600w (which in turn most correlates with the middle range of an SAE 140 gear lube viscosity wise, the 680 is at the high end and beyond of that range). __________________ Luck occurs when preparation and opportunity converge. Last edited by Uncle Bob; 04-07-2013 at 12:15 PM.