Originally Posted By: Slick
What HDEO choices do I have in Midwest US for a SAE Viscosity 10W-40 that is an API CI/CJ4 specification. Trying to meet the Manual Requirements for a 10W-40 that I typically do not see available. It is a small IDI diesel tractor with 3 cylinder 1.1 liter.
The Owner Manual is as follows:
above 77 F (25C) SAE Viscosity 30w / 10W-30 / 10W-40
32 F to 77 F (0C to 25C) SAE Viscosity 20w / 10W-30 / 10W-40
below 32 F (0C) SAE Viscosity 10w / 10W-30 / 10W-40
I use the tractor spring/summer/fall with outside temperature range from 40F to 100F. I am not real comfortable using 10W-30 as is allowed in the manual and would like to use the 10W-40 if I can find it. Would like to use 15w40 but that is not shown as a recommended oil. I am surprised that they do not allow a 15w40 for temperatures above 32F. Thus that is why I am looking for a easy to locate 10W-40 CI/CJ4 oil.
Thanks Slick
I would use 15w40 and not worry... but I also respect when one wants to follow the owners manual.
Rotella T6 5w-40 (or other 5w-40 HDEO) would be a top notch year round choice. little more pricey, but with a small(er) sump not as big of a deal.
The only place I have seen 10w-40 HDEO is at tractor supply, which was Rotella T5 10w-40.