321d oil question

[banshee.350]

I have a grasshopper 321D with a Kubota 3 cylinder 21 horse diesel. The manual calls for 10W-30 or 10W-40 oil but all the stores only have 15W-30(rotella) diesel oil. Do the smaller diesel engines such as this use regular engine oil or is the 15w-30 what I should use.
Any information is greatly appreciated.

 

[wushaw]

The 15-30 Rotella will work just fine. It's a diesel and you need to use a diesel oil, I use 15-40 Rotella in all my diesels.

 

[RWEST]

If it's Rotella, it's either 10-30 or 15-40, they don't make a 15-30.

 

[banshee.350]

you are right it was 15w-40 rotella.