RAM CHASSIS CAB 2015 Owner's Manual page 494

492 MAINTAINING YOUR VEHICLE
CAUTION!
Overfilling or underfilling the crankcase will cause
oil aeration or loss of oil pressure. This could damage
your engine.
Change Engine Oil
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
Refer to the "Maintenance Schedule" for further informa-
tion.
NOTE: Under no circumstances should oil change in-
tervals exceed 8,000 miles (13,000 km) or twelve months,
whichever occurs first.
Engine Oil Selection — 5.7L Engine
For best performance and maximum protection under all
types of operating conditions, the manufacturer only
recommends engine oils that are API Certified and meet
the requirements of Chrysler Material Standard MS-6395.
Engine Oil Selection — 6.4L Engine
For best performance and maximum protection under all
types of operating conditions, the manufacturer only
recommends engine oils that are API Certified and meet
the requirements of Chrysler Material Standard MS-
12633.