Fluid · Coolant
Coolant
for 2026 Ram 3500 6.7L I6 Cummins Diesel · RWD
Fluid Type
Mopar OAT coolant 50/50 (purple/red)
Spec: MS-12106
Capacity
28qt
26.49 L
Drain & Refill
28 qt
26.49 L
Change Interval
150,000 mi
241,350 km
Notes
6.7L Cummins cooling system. 10 years/150k miles first change, then every 5yr/100k
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