What do you think is Severe Service? So many different things in manual from one manufacturer to another. My manual states change oil at 4k for dusty condition or stop and go traffic and it also states low rpm and ethanol use will shorten OLM. I am always at low rpm as first 3 miles are between 25 and 35 mph with hitting highway at 45 mph. I do get up to 55 mph at least once a month but that is short drive as well as taking a trip once or twice a year. I do push the 10 mile limit on occasion but mostly 5 miles one way several days a week. I consider this Severe Service. Since this has become my normal I do 6 month oil change with Valvoline Daily Synthetic Blend 5w20 with between 3500 and 4500 miles. I am still waiting for the OLM to come on to compare and see if it recommends once a year. (Been 5k so far). Oh I did 7800 miles last year.
2018 Grand Caravan
14240 miles
2018 Grand Caravan
14240 miles
Last edited: