97 12Valve Oil Change

[97OneTon12Valve]

3500, 97, 12 V with about 260 K miles. I put on about 3K miles a year and have been changing oil & filter yearly. Been usung Delo 15w40. Overkill? How about fuel filter interval? Thanks for your input.

 

[Cummins12V98]

Once a year is cheap maintenance for the oil change. Try going two years and do a Blackstone oil analysis and see what hey say.

if it were me as I run AMZ/OIL 15-40 I would change every 10k. Blackstone said I could go longer.

Fuel filter 10k

 

[97OneTon12Valve]

Once a year is cheap maintenance for the oil change. Try going two years and do a Blackstone oil analysis and see what hey say.

if it were me as I run AMZ/OIL 15-40 I would change every 10k. Blackstone said I could go longer.

Fuel filter 10k

Thanks for the advice!