2015 Chevrolet Silverado 3500HD — Oil Capacity & Filter

The 2015 Chevrolet Silverado 3500HD takes 6.0 quarts (5.7 liters) of oil with the 6.0L gas V8 and 10.0 quarts (9.5 liters) with the 6.6L Duramax diesel, both with a new filter.

Quick answer

• 6.0L V8 gas (L96; LC8 bi‑fuel CNG)
  • Capacity: 6.0 qt (5.7 L) with filter
  • Viscosity: 5W‑30 year‑round (0W‑30 acceptable in very cold climates)
  • Oil spec: GM dexos1 (original) or API SN/GF‑5 (later dexos1 Gen 2 oils are backward‑compatible)
  • Oil filter: ACDelco PF48E (OEM). Popular cross‑refs: Fram PH10060 or XG10060; Wix 57060; Mobil 1 M1‑113A
• 6.6L Duramax diesel (LML)
  • Capacity: 10.0 qt (9.5 L) with filter
  • Viscosity: 15W‑40 for temps above 0°F (‑18°C); 5W‑40 full‑synthetic for cold climates or year‑round severe service
  • Oil spec: API CJ‑4 (original) — API CK‑4 is acceptable and backward‑compatible
  • Oil filter: ACDelco PF2232 (OEM). Popular cross‑refs: Fram PH9100 or XG9100; Wix 57202; Mobil 1: consult dealer/cross‑reference catalog to confirm current part

Capacity by engine option

Oil change interval

• Gas 6.0L (L96/LC8)
  • Normal service: Follow the Oil Life Monitor (OLM); typically up to 7,500 miles or 1 year, whichever comes first.
  • Severe service (frequent towing/hauling, lots of idling, dusty sites, short trips): 3,000–5,000 miles or when the OLM calls for it, whichever comes first.
• Duramax 6.6L (LML)
  • Normal service: Follow the OLM; generally up to 7,500 miles or 1 year with CJ‑4/CK‑4 oil.
  • Severe service (heavy towing, hot/cold extremes, off‑road/dust, extended idling): 5,000 miles or when the OLM indicates — shorten further if fuel dilution is observed.

Drain plug torque

• 6.0L gas V8: 18 lb‑ft (25 N·m)
• 6.6L Duramax diesel: 31 lb‑ft (42 N·m)
• Crush washer/gasket notes:
  • Gas 6.0L: The plug typically uses a reusable, captured sealing washer. Inspect and replace if cut, flattened, or leaking.
  • Duramax: Uses a separate sealing washer; replace at every service to prevent drips.

How to change the oil

1. Warm the engine, then shut off and safely raise/support the truck (use ramps or stands rated for HD trucks). Remove any skid plate if equipped.
2. Place a large drain pan (the Duramax needs capacity for 10 quarts). Remove the drain plug and let oil fully drain.
3. Remove the oil filter:
   • Gas 6.0L: Spin off the PF48E‑type filter from the lower block area.
   • Duramax: The PF2232 filter is vertical; consider pre‑filling the new filter ~½ full to minimize dry start.
4. Wipe the mounting pad, lightly oil the new filter gasket, and install hand‑tight plus 3/4 turn (or follow filter box instructions).
5. Reinstall the drain plug with a good washer and torque to spec.
6. Refill:
   • Gas 6.0L: Add ~6.0 qt of 5W‑30 meeting dexos1.
   • Duramax: Add ~10.0 qt of 15W‑40 (or 5W‑40 synthetic for cold climates) meeting API CJ‑4/CK‑4.
7. Start the engine, check for leaks, then shut off, wait a minute, and verify the dipstick is at the proper level. Top off as needed.
8. Reset the Oil Life Monitor via the Driver Information Center.

Common issues / tips for this generation

• Gas 6.0L valvetrain tick on cold start can be normal and often improves with the correct 5W‑30 dexos1 oil and regular changes.
• Oil cooler line seepage: Both gas and diesel HD trucks can develop leaks at cooler hose crimps over time. Inspect during every oil change.
• Duramax fuel dilution: During active DPF regens, some LML engines show rising oil levels due to fuel dilution. If the oil smells like diesel or the level climbs, shorten the interval and address any regen or injector issues.
• Cold‑weather diesel operation: A 5W‑40 full‑synthetic CJ‑4/CK‑4 improves cold cranking and turbo lubrication in sub‑freezing climates.
• Filter length on gas 6.0L: PF48E is the OEM size; some owners use the longer PF63E equivalent where clearance allows. Always verify gasket diameter and thread match before substituting.
• Always verify by VIN: Mid‑year changes happen. If your truck has aftermarket pans, relocation kits, or upfit equipment, confirm capacity after filling and checking the dipstick.

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