Oil & Coolant Capacities Cummins ISX15 / X15 Verified Factory Specs

Cummins ISX15 & X15 Oil Capacity, Filter Part & Viscosity Specs

Factory OEM engine oil capacity specifications for Cummins ISX15 and X15 diesel engines. Standard vs deep sump pan volumes, filter change quantities, and drain plug torque.

Select Commercial Diesel Engine

Include Filter Fill (+4 Qts)

Total Engine Oil Fill Volume Required

12Gallons/48Quarts

Metric Equivalent: 45.4 Liters

Recommended Viscosity:15W-40 (CK-4) / 10W-30 (FA-4 for GHG17+)

OEM Filter Part:Fleetguard LF14000NN

Drain Plug Torque:70 ft-lbs (95 N·m)

Coolant System Capacity:Engine Block Only: 5.5 Gal | Typical Chassis Complete Fill: 13.5 Gal (51.1 L)

Type: Heavy-Duty Extended Life OAT (Red/Nitrite-Free)

Cummins ISX15 / X15 Oil Change Specifications

Sump Capacities

Standard Front/Rear Sump: 11 Gallons (44 Quarts / 41.6 Liters)

Deep Oil Pan Option: 13 Gallons (52 Quarts / 49.2 Liters)

Lube Filter Volume: 1 Gallon (4 Quarts)

Filters & Torque Specs

OEM Oil Filter: Fleetguard LF14000NN (StrataPore / NanoNet)

Oil Pan Drain Plug Torque: 70 ft-lbs (95 N·m)

Oil Viscosity: 15W-40 CK-4 (or 10W-30 FA-4 for GHG17+)

Related Heavy Diesel Engineering Tools

Cross-reference other factory specifications and diagnostic tools for commercial diesel engines:

Pillar 3 →

Valve Lash & Overhead

Intake, exhaust, & Jake brake clearances.

Pillar 1 →

Oil & Coolant Sump

Standard vs deep pan fill volumes.

Pillar 4 →

Head Bolt Torque

Torque-to-yield angle stages & sequences.

Pillar 2 →

SPN Fault Code Lookup

J1939 fault diagnostics & sensor pins.

Technical Reference Citation: Cummins QuickServe Online Service Manual Bulletin 003-004 (ISX/X15 Overhead Set)

View Engineering Methodology & Standards →