Any major brand of 15W40 diesel oil is fine. I have used Rotella, and Mobil Dello 15W40 dino-oil. Some folks use synthetic diesel oil as specified in the owners manual.
Now, because of my age and physical condition, I have
Speedco change the diesel engine oil and diesel generator oil and filters. They are very RV friendly, and even invite you to come watch everything they are doing.
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2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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