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Hi George, I'll say this, and I ain't gonna run form the flak... In my book, any Diesel rated engine oil, with an API rating of CI4, of 10W30, or 15W40 weight is what you ought to be using in that little 3 banger. Weight depending on ambient temperature. So, in my book, Rotella is fine, along with a lot more. Right now, my engine oil is supplied from NH, which is supplied by American Viscosity, a subsiduary of the Fiat group. Previously, in Canada, NH sourced their oil from Esso, and was nothing less than their best, XD3. I've also used Ultramar and Texaco products in the past in the tractors. For the pickup, I go to Walmart, and I buy the cheapest 5 quart jug of SJ rated 5W30 I see, regardless of brand. As far as I'm concerned, they come off the same tap, just in a different color jug. I do respect the viscosity ratings, fluid specs for hyd/trans oils, and in the diesels, I always use a heavy duty rated DIESEL engine oil. Otherwise, I could care less what brand name is on the jug. I'll probably be sourcing the oil from somebody else in the near future, because American Viscosity has gone completly bonkers on price. Esso used to be a competitive source. Now, I thinks I stirred up a sh!t storm. BTW, the other Wix number quoted above could probably be taken as correct over the 51515 I quoted. I just gave a straight cross of the PH8A, which may not be a perfect filter for the tractor, although it does fit. The B2 Baldwin sounds right. Also, on the 4000, there isn't likely to be an air filter, just the oil bath on the diesels. I didn't mention the hydraulic filters, because they are only return filters, and generally only changed for a reason, or once or twice in a lifetime. Mine, at 7000 hours have never been changed, and I don't see a reason yet. My 2 cents...
Rod
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