Was reading the RHO manual posted on this forum & was surprised to see the SST HO has rather short recommended oil change intervals, at least compared with industry standards. If I recall correctly, 6K was normal conditions…4K was severe conditions.
Can someone find that post & confirm?
SCHEDULED SERVICING — RHO
The Scheduled Maintenance services listed in this manual must be done at the times or mileages specified to protect the vehicle warranty and ensure the best vehicle performance and reliability. More frequent maintenance may be needed for vehicles in severe operating conditions, such as dusty areas and very short trip driving. Inspection and service should also be done anytime a malfunction is suspected.
The oil change indicator system will remind you that it is time to take your vehicle in for scheduled maintenance.
The instrument cluster display will display an “Oil Change Required” message and a single chime will sound, indicating that an oil change is necessary.
Based on engine operation conditions, the oil change indicator message will illuminate.This means that service is required for your vehicle. Have your vehicle serviced as soon as possible, within the next 500 miles (805 km).
Note:
- The oil change indicator message will not monitor the time since the last oil change.Change your vehicle's oil if it has been six months since your lastoil change, even if the oil change indicator message is NOT illuminated.
- Change your engine oil more often if you drive your vehicle off-road for an extended period of time.
- Under no circumstances should oil change intervals exceed 6,000 miles (10,000 km) or six months, whichever comes first.
An authorized dealer will reset the oil change indicator message after completing the scheduled oil change. If a scheduled oil change is performed by someone other than an authorized dealer, the message can be reset by referring to the steps described under Instrument Cluster Display
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Severe Duty All Models
Vehicles that are operated in a dusty and off-road environment, or predominately at idle or very low engine RPM are known as Severe Duty vehicles. It is recommended that you change engine oil at 4,000 miles (6,500 km)or 350 hours of engine run time.
Source:
https://www.mopar.com/ramtrucks/en-...manual.html?year=2025&brand=Ram&model=1500_DT