[Water Warrior 2]

JohnC, my bad. I have been lead to believe most if not all diesel oils will do the job. Rotella is certified and many riders used long before it was certified with no problems. I also use it in my Ranger 4.0 V6 with good results.
I must have written at one time that both the Vstrom 650 and Lynda's M-50 Suzuki were happy with 15-40 Rotella dino oil. Oddly enough the Vstrom shifted better with the cheap dino compared to Amsoil moto specific 10-40 oil.