AC I-400 engine oil type

[Ken Brownell]

I have an AC I-400 based on the D-10 series III tractor and I cannot find anywhere in the books I have the recommended engine oil type. I would assume that it might use a 30# non-detergent, but really don't want to switch to the wrong kind and cause problems. Any ideas?

 

[Joe(TX)]

Don't use non detergant oil in any engine. Use any good grade of engine oil.

 

[Anonymous-0]

I'm running Amsoil 10w30 or 10w40 in a D-10,12,2-14's, and a 15(II). Never have had a problem. One thing on all of the A-C engines that have the older style oil filter, stay away from the paper elements, they don't give any back pressure to the oil, so you'll end up with NO oil pressure if you use them. Also check the filter mounting boss and its cork gasket-this is a frequent area for leaks. Its better to cut a new cork gasket than to over torque the old one in hopes of stopping a leak!