I've always changed my oil every 3,000 (on every vehicle I've owned). On my new 2500 it specifies that the oil changes should be about every 3750 miles. And the dealer told me to change it between 3k and 6k depending on how I drove it...thoughts? What do experienced owners do?

 

In summer I change mine about every 5,000 miles. In winter about every 3,500-4,000.

 

Define "new"

The 3rd gen's (2003-2006) have quite different recomendations than the 24 valve's (1998.5-2002)


phox

 

Thats what I was thinking..... my manual says 7500 for "severe" service and 15000 for "normal" Personally, I don't use the odometer to govern the oil change....I use the hour meter just like I do on my trusty diesel tractor.... every 100 hours oil & filter change along with the fuel filter.

 

My tractor goes 200 hours between changes. Truck at 4000-4500 miles.

 

It's a 2005 24 valve...6 speed manual

 

i change oil, filter, and fuel filter every 5 k. I use rotella T 15w 40 w/ fleetguard filters from cummins.

 

Ditto, except fuel filters every 10k

 

every 5000 miles oil and filter,fuel filter every 10,000 miles,and no syn. oil till she's broken in(about 15k miles) good luck.

 

oil & filter at around 10k-12k [kilometers] for me. synthetics have been in the sump since ±10,000km