I've been using the napa fleet diesel, or valvolene diesel 15/40 ( same oil maybee? ) in my ford 5000 and NH 7610s and also change the fluid/filters regularly. IE.. sometimes 2x a year...
I have noticed a considerable drop in soot in the oil when i change.. IE.. the oil is keeping the soot suspened and the filter is removing it well. both of these tractors came to me with stereotypical 'coal black' oil.. and I know that at least , the 7610s was well maintained, because the prev owner had the local CNH dealer maintain it for the year it was owned by him, before i bought it. ( IE.. only 1 prev owner.. as he bought it new ).
soundguy
I have noticed a considerable drop in soot in the oil when i change.. IE.. the oil is keeping the soot suspened and the filter is removing it well. both of these tractors came to me with stereotypical 'coal black' oil.. and I know that at least , the 7610s was well maintained, because the prev owner had the local CNH dealer maintain it for the year it was owned by him, before i bought it. ( IE.. only 1 prev owner.. as he bought it new ).
soundguy