Interestingly I had this question too. We used to use Traveller 15w-40 HDDEO in all of our equipment, and to be fair have had no engine issues. However, in 2021 I purchased a 2001 RAM 2500 with the Cummins. A friend who also had a RAM diesel said he had always used Shell Rotella T4 15w-40. So I said Oooooookie dokie and that's what went in Clifford. But I had some left over, and our MF 285 was in need of an oil change. And here is where I will add, I was not happy with the engine oil pressures of the tractor. Once it got warmed up, whether bush hogging or plowing or discing, oil pressure dropped from at the high end of the green range (Im sorry its a color gauge that's the best I got) down to the 1/3 ish area of the green range, and when idled down was barely in the green. So I decided to try the Shell and see what happened. And with the Shell, the tractor can be overheating (broomsedge with holes in the grill, am i right?) And my oil pressure stays way above half, and gets down close to half when idled down. And for transparency sake, both were CK-4 rated, 15w-40,and conventional, and both instances used the same AGCO filter. And the low oil pressures are a common theme with all the equipment we use the Traveller in. The more reading I do, the more the Shell Rotella T4 stands out as one of if not the best rated and reputed oils out there, well worth a little extra $$ IMHO. And since its less than $10 more for a 5gal bucket of the Shell at RK than a 5gal bucket of the Traveller. I am no oil expert but that's just what I have seen in my case.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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