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Prices may varyThis product ranks #18 of 24 in Motor Oil.Three above it ↓
Last reviewed June 17, 2026
TL;DR API SQ + ILSAC GF-7A, the current 2025/2026 top certification tier, with GM dexos1 Gen 3, Ford, and Chrysler OEM approvals. The 20,000-mile drain interval on the label is optimistic; community UOA data on BITOG places real-world performance at 8,000-10,000 miles on a typical daily driver.
Castrol EDGE 5W-30 is a full-synthetic motor oil built on highly refined petroleum base stocks. It is certified to API SQ and ILSAC GF-7A, the successor specifications to API SP and GF-6A launched March 2025, and carries GM dexos1 Gen 3, Ford WSS-M2C961-A1, and Chrysler MS-6395 approvals. The label claims a 20,000-mile drain interval; BITOG UOA threads consistently place the oil at 8,000-10,000 miles before oxidation markers climb on a typical daily driver, solid for a full synthetic but not the headline number. The SDS on file was last revised in 2017; the current formula is certified to API SQ/GF-7A, which postdates the SDS.
Best for owners maintaining 2020-2026 model-year GM, Ford, or Chrysler vehicles that specify 5W-30 and require one of the named OEM approvals. Skip it if your engine calls for a different viscosity grade, or if you have a pre-2010 high-mileage engine where anti-wear additive loading above the API-mandated minimum matters; Castrol does not disclose those concentrations.
The SDS classifies Castrol EDGE 5W-30 as not hazardous under GHS; no signal word and no H-codes at mixture level. The California Prop 65 warning is associated with mineral oil mist, which IARC classifies as a Group 1 carcinogen based on occupational aerosol exposure during industrial machining, not pour-and-drain contact during a home oil change. SDS section 8 specifies nitrile gloves for prolonged or repeated skin contact, most relevant at the hot-drain step. Used engine oil accumulates combustion byproducts; avoid prolonged skin contact and wash thoroughly. Used oil goes to collection, not down the drain or on the ground, at most automotive retailers and municipal hazardous waste facilities.
The 20,000-mile claim is a manufacturer drain interval, not a guarantee for all driving conditions. Community UOA threads on Bob Is The Oil Guy (BITOG) consistently place Castrol EDGE 5W-30 at 8,000-10,000 miles before TBN depletion begins to accelerate on a typical daily driver. Extended-drain claims hold better for highway-heavy, low-load driving; stop-and-go or towing use should use shorter intervals. Follow your OEM's specified interval, not the label maximum.
API SQ is the successor to API SP, introduced in 2025 as the current top certification for gasoline passenger-car engines. It adds tighter requirements for low-speed pre-ignition (LSPI) protection in turbocharged GDI engines, enhanced deposit control, and compatibility with fuel-efficient low-viscosity grades. If your vehicle specifies API SP or older, an SQ-certified oil is backward-compatible.
Yes. Castrol EDGE 5W-30 carries GM dexos1 Gen 3 approval (license number D355AZFJ082, visible on the bottle label). GM dexos1 Gen 3 is required for most 2020+ GM gasoline engines and is backward-compatible with vehicles that specified dexos1 or dexos1 Gen 2. Verify your owner's manual for the specific viscosity grade your engine requires.
The Prop 65 warning on California bottles is 'WARNING: Cancer and Reproductive Harm.' For motor oil, this warning is associated with mineral oil mist, which IARC classifies as a Group 1 carcinogen based on occupational aerosol exposure in industrial machining environments, not pour-and-drain contact during a home oil change. The SDS classifies the fresh oil as not hazardous. Used engine oil accumulates combustion byproducts during service; avoid prolonged skin contact and wash thoroughly after handling.
Yes. Castrol EDGE 5W-30 is approved to Ford WSS-M2C961-A1 and Chrysler MS-6395 specifications, as stated on the bottle label. Always verify that your specific vehicle requires 5W-30 and not a different viscosity grade. Using the OEM-specified viscosity matters more than brand selection in most modern engines.
Marketing copy from Castrol, via Amazon. Not editorial.
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