Thanks for your reply. However after my first post, I kept digging for some answers (new guy with 1st diesel ever) I found out that the API rating on Mobil 1 SuperSyn was only CF. (see, I beginning to learn too much) Looking at the oil ratings of the Ambra (never heard of this until now) oil that was recommended in my owners manual, the API rating were CI-4, CH-4, etc. all rated for heavy duty diesel use engines. After talking with my dealer, and while the tractor is still under warranty, I decided to stay with the NH-Ambra brand. However, I decide to use the synthetic oil (Mastergold SSL). From what I've belive that I've learned, it's a pretty good oil. Does anyone else know anything or had any experiences with this oil?
Learned too much for my on good /forums/images/graemlins/wink.gif