Ram Trucks 2013 Chassis Cab - Owner Manual - Manual (Page 417)

To check the coolant level:
1. Open the coolant reservoir.
2. Lift and remove the plastic dipstick from the reservoir
neck.
3. Check the coolant level on the dipstick.
The radiator normally remains completely full, so there
is no need to remove the radiator cap unless checking
for engine coolant (antifreeze) freeze point or replacing
7
MAINTAINING YOUR VEHICLE 415