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Prices may varyHealth score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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Translated from the manufacturer’s Safety Data Sheet, Section 8
Section 11 of the SDS reports the product causes mild eye irritation on contact, and Section 8 recommends ANSI Z87.1 eye protection (a face shield in some conditions). Section 2 carries no H318/H319 code at mixture level, but the documented irritation effect is the basis for wearing eye protection during pouring and draining, not just splash risk.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Translated from the manufacturer’s Safety Data Sheet, Section 8
Section 11 reports mild skin irritation on contact, with repeated exposure able to dry or crack skin, and Section 8 calls for gloves impervious to the material (nitrile rubber suggested). The retail listing also carries a California Prop 65 warning, reinforcing glove use beyond a brief splash during a normal oil change.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Only when: hot panels · in enclosed space
Translated from the manufacturer’s Safety Data Sheet, Section 8
Section 8 sets an oil-mist exposure limit (TWA 5 mg/m3, STEL 10 mg/m3) and notes a NIOSH-certified air-purifying respirator (R or P95) may be used if airborne levels exceed that limit; Section 4 notes mist or vapor generated at elevated temperatures may cause respiratory irritation. Section 2 carries no classified respiratory hazard, so this is a ventilation/heat precaution (hot oil during a drain, a poorly ventilated garage) rather than a mixture-level respiratory hazard.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
Scope of these PPE tiers. The tiers on this page translate the product's Safety Data Sheet where one is published, plus its ingredient chemistry, into a comparable rating. They describe a formulation, not a situation: a tier is not a safety determination for any specific user, task, quantity, or environment. The manufacturer's label and use instructions govern how the product is handled. Where the product is used at work, the employer's PPE program and hazard assessment under 29 CFR 1910.132 decide what protection is selected, not this page.
No warranties. CarCareTruth makes no warranties, express or implied, and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose.
This product ranks #12 of 23 in Motor Oil.Three above it ↓
Last reviewed July 2, 2026
TL;DR The GM factory-specification oil for the 3.0L LM2 Duramax diesel. As the OEM part (ACDelco 10-9277 / 19370138), it is the most direct way to satisfy the dexosD 0W-20 requirement and maintain GM's powertrain warranty. Prop 65 warning applies.
ACDelco GM OE dexosD 0W-20 is General Motors' own factory-fill motor oil for the 3.0L LM2 Duramax diesel, the engine available in the 2019-and-newer Sierra 1500 and Silverado 1500 T1XX trucks. It carries the GM dexosD license by definition: this is the product that sets the specification that aftermarket alternatives must meet to earn the dexosD designation.
The dexosD spec is built on API SP chemistry with additional requirements specific to light-duty diesel engines: a low-SAPS (sulfated ash, phosphorus, sulfur) additive package that protects the diesel particulate filter (DPF) and an SAE 0W-20 viscosity grade required for the LM2's fuel-economy and cold-start targets. The formulation is manufactured by Phillips 66 under contract for GM.
Drain intervals follow the vehicle's Oil Life Monitor (OLM), which GM calibrates specifically for the LM2 diesel's combustion chemistry and DPF regeneration cycles. Owners typically see OLM-suggested intervals around 7,500 miles under normal mixed driving.
Best for 3.0L LM2 Duramax owners who want the factory-specification product without question, the OEM part is the simplest way to document dexosD compliance for warranty purposes. Castrol EDGE Euro Car Turbo Diesel 0W-20 and Mobil 1 ESP X2 0W-20 offer competing dexosD-licensed alternatives with broader European OEM approval portfolios and are equally valid under the GM spec; choosing between them comes down to price per quart and availability.
Skip if you own a gasoline-engine Sierra 1500, the gas engines require dexos1, not dexosD, and these are not interchangeable.
The SDS on file is a proxy document covering the ACDelco dexos1 0W-20 (gasoline formula, manufactured by Phillips 66), a dexosD-specific SDS was not publicly available as of 2026-07-01. Both grades share Group III petroleum base chemistry and the same GHS classification status: not hazardous under OSHA HazCom 2012, no signal word, no H-codes at mixture level. The H304 aspiration hazard does not apply, 0W-20 grade kinematic viscosity at 40°C is well above the 20.5 mm²/s threshold at which the CLP viscosity exemption removes the classification.
The Prop 65 warning comes from the retail listing and does not name the chemical behind it; with no product-specific SDS published, we cannot cross-check an ingredient against California's list. The ZDDP anti-wear additive, often assumed to be the trigger, is not on that list. Used oil should go to collection, AutoZone, O'Reilly, Advance Auto Parts, Walmart Auto, and most municipal hazardous-waste facilities accept it.
Yes. The 3.0L Duramax diesel (LM2 2020-2022, LZ0 2023-present) in the T1XX-generation Sierra 1500 requires a GM dexosD-licensed 0W-20 oil. ACDelco GM OE dexosD 0W-20 (part no. 10-9277 / 19370138) is the factory-specification product for this engine. Using a dexosD-licensed oil is required to maintain GM's powertrain warranty for the diesel engine.
dexosD is GM's specification for light-duty diesel engines · specifically the 3.0L Duramax LM2. It differs from dexos1 (which covers GM's gasoline engines) by requiring low-SAPS (sulfated ash, phosphorus, sulfur) chemistry to protect the diesel particulate filter (DPF). Using a dexos1 oil instead of dexosD in the LM2 Duramax risks DPF contamination and may void the warranty. The two specs require different additive chemistries and are not interchangeable.
Follow the Oil Life Monitor (OLM) on the vehicle's instrument cluster. GM's OLM algorithm for the LM2 Duramax accounts for driving conditions, fuel combustion byproducts in the diesel context, and DPF regeneration cycles. Under normal use, owners typically see OLM oil-change intervals of around 7,500 miles. Do not extend beyond what the OLM recommends · the LM2 Duramax has specific diesel combustion chemistry that the OLM is calibrated to track.
The warning comes from the retail listing, and nothing on file names the chemical behind it. There is no product-specific SDS published for this oil, so we cannot cross-check an ingredient against California's list. The zinc dialkyl dithiophosphate (ZDDP) anti-wear additive is sometimes assumed to be the reason, but it is not on the Prop 65 list. Warnings like this appear on many petroleum-based motor oils, are required by California law for products sold in the state, and do not indicate an unusual risk under normal oil-change handling.
Marketing copy from ACDelco, via Amazon. Not editorial.
Per manufacturer cross-reference, not a physical test fit. A single generation often forks by engine, trim, and market.
Check this against your owner's manual before you buy
⚠ 2019-present GMC Sierra 1500 T1XX with the 3.0L Duramax diesel (LM2 2020-2022 and LZ0 2023-present) only. Requires GM dexosD 0W-20 spec. Does not apply to gasoline engine variants of this vehicle.
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