Hi,
I believe the owners manual calls for a 15W-40 weight oil...you may want to look that up....
And on the subject...many of you are sold on synthetic oils like (m-1)
But in the recent Aug-Sept Land-Line magazine there was a great article indicating that you really have to look what your getting with pure synthetics.
I used to rep for a company in Texas called Lubrication Engineers...go take a look at their website...
www.le-inc.com
(homepage) They too have an interesting article from a few years ago about the synthetics.....My point being is that there are super-premium oils (mineral based...and not just LE) out there that do just as good a job and blend well with the additive packages as synthetics to give you the lubricity that is required for the engine...again IMHO
Three things I did learn from being a rep for these guys (and seeing a variety of engines, transmissions and gear boxes ...(both driven and stationary
1. Change filters often...sometimes more often than the oil
2. Do oil analysis to be sure you know what going on (P.S. use an independent lab)
3. Never---ever add off-the-shelf additives ...to you fluids without asking your lubrication company if it will react with what you have in your crankcase or tank....An expert put it this way....if your doctor prescribed an anti-biotic for your condition...would you then also go out and add take something off-the-drugstore shelf ...for a little more help ????
From everything I've read the new diesel engine will require even more help from oil additives blended into the engine oil
Well anyway....I'll get of the soap-box again.
Thanks
Frank in Pa.
"The Beast in the East"