2025 Chevrolet Suburban — Oil Capacity & Filter Specs

The 2025 Chevrolet Suburban takes 8.0 quarts (7.6 liters) of engine oil with filter for its 5.3L and 6.2L V8s, and approximately 7.0 quarts (6.6 liters) with filter for the 3.0L Duramax diesel.

Quick answer

• Oil capacity (with filter):
  • 5.3L V8 (L84): 8.0 qt (7.6 L)
  • 6.2L V8 (L87): 8.0 qt (7.6 L)
  • 3.0L Duramax I6 (LZ0): ~7.0 qt (6.6 L). Always verify in the owner’s manual or under-hood label.
• Recommended oil weight:
  • 5.3L/6.2L gas V8: 0W-20
  • 3.0L Duramax diesel: 0W-20 (diesel-rated)
• Oil specification:
  • 5.3L/6.2L gas V8: GM dexos1 Gen3 (API SP equivalent or better)
  • 3.0L Duramax diesel: GM dexosD (follow the under-hood label/owner’s manual for latest spec)
• Oil filter part numbers:
  • 5.3L/6.2L V8 OEM: ACDelco PF63 (GM OE). Popular cross-refs: Fram XG10575, Wix 57060, Mobil 1 M1-113A.
  • 3.0L Duramax I6 OEM: cartridge type—consult dealer with VIN to ensure the correct part for LZ0. If using aftermarket, consult the catalog by VIN/engine code.

Capacity by engine option

Oil change interval

• Follow the GM Oil Life Monitor (OLM) in the instrument cluster. Change the oil and filter when OLM reaches 0% or when prompted.
• Typical service intervals:
  • Normal driving: up to 7,500 miles (12,000 km) or 1 year for gas V8s; up to 10,000 miles (16,000 km) or 1 year for the 3.0L Duramax, whichever comes first.
  • Severe duty (frequent short trips, extreme temps, heavy towing/hauling, dusty conditions, lots of idling): 5,000 miles (8,000 km) for gas V8s; 7,500 miles (12,000 km) for Duramax—or sooner if the OLM calls for it.

Drain plug torque

• Drain plug torque: 18 lb-ft (25 N·m) is typical for the Suburban’s aluminum oil pan.
• Crush washer note: Replace the aluminum or bonded-seal washer if equipped. Some GM plugs use an integrated rubber gasket—inspect and replace the plug/washer if cut, flattened, or leaking.

How to change the oil

1. Warm the engine to operating temperature, then shut off and allow a few minutes for oil to settle.
2. Safely raise and support the front end if needed. Remove any splash shield or skid plate fasteners to access the drain plug and filter.
3. Place a drain pan, remove the drain plug, and let oil drain completely. Replace the washer if applicable and torque the plug to 18 lb-ft (25 N·m).
4. Replace the oil filter:
   • 5.3L/6.2L: Spin off the PF63-type filter. Lightly oil the new gasket, spin on until the gasket contacts the base, then tighten 3/4 turn by hand (or to the filter maker’s torque spec).
   • 3.0L Duramax: Replace the cartridge element and O-rings in the filter housing. Lightly oil new O-rings and ensure they seat in the correct grooves. Torque the cap per service information.
5. Reinstall any splash shields.
6. Fill with the correct amount and grade of oil. Start the engine, check for leaks, then shut off and wait 5 minutes.
7. Verify the level on the dipstick and top off as needed. Reset the OLM through the instrument cluster menus.

Common issues / tips for this generation

• Use dexos1 Gen3 0W-20 in the gas V8s. It provides LSPI protection and deposit control critical for Dynamic Fuel Management (DFM) lifters and cam oiling.
• Always use a quality filter (PF63-equivalent) on the V8s. Cheap filters can cause start-up rattle or delayed oil pressure, which DFM valvetrain components don’t tolerate well.
• 3.0L Duramax note: This engine uses a cartridge filter with multiple O-rings. Misplaced or reused O-rings can cause leaks or unfiltered bypass. Do not overfill; verify the level after a hot soak and a 5-minute drain-back.
• Skid plate/splash shield fasteners are easy to strip—support panels and hand-start all bolts. Lose one clip and you’ll get annoying underbody rattles.
• If you tow frequently or idle a lot, shorten intervals even if the OLM shows life remaining—heat cycles and fuel dilution accelerate oil degradation.
• After any oil change, confirm no oil seepage at the cooler lines and the drain plug, and recheck the level the next morning.

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