API CG-4 – diesel engine oil

Older API category for heavy-duty diesel engines, written for fuel below 0.5 % sulphur.

Name: Diesel engine oil, API CG-4 performance level
Issued by: API (American Petroleum Institute)
Category: Engine oil performance
Status: Withdrawn — Superseded by API CH-4
Verified: 30 August 2026

Products covered by this standard

Eni

7 products

Eni Engine oils

Eni i-Sigma performance E3 15W-40
Multigrade S.H.P.D. oil with a long drain interval, for diesel engines
- Heavy-duty diesel
- Cars
SAE 15W-40
Eni i-Sigma performance E3 20W-50
Multigrade oil for the diesel engines of heavy vehicles and cars
- Heavy-duty diesel
- Cars
SAE 20W-50
Eni i-Sigma universal 15W-40
Universal multigrade oil for mixed diesel and gasoline fleets
- Heavy-duty diesel
- Cars
SAE 15W-40
Eni i-Sigma universal 20W-50
Universal multigrade oil for mixed diesel and gasoline fleets
- Heavy-duty diesel
- Cars
SAE 20W-50

Eni Agricultural multifunction oils

Eni Multitech 10W-30
Multifunctional oil for every component of agricultural machinery
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-30
Eni Multitech 10W-40
Multifunctional oil for every component of agricultural machinery
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-40
Eni Multitech 15W-40
Multifunctional oil for every component of agricultural machinery
- Tractors (UTTO)
- Tractors (STOU)
SAE 15W-40

Petronas

3 products

Petronas Engine oils

Petronas Akros Synt Gold
Multigrade synthetic engine oil for tractors and agricultural and earthmoving machinery
- Heavy-duty diesel
SAE 10W-40
Petronas Akros Turbo 15W40
Engine oil for tractors and farm machinery, turbocharged or naturally aspirated
- Heavy-duty diesel
SAE 15W-40

Petronas Marine lubricants

Petronas Disrol CI-4
15W-40 oil for high-speed marine diesel engines, API CI-4
- High-speed marine
SAE 15W-40

Divinol

2 products

Divinol Agricultural multifunction oils

Divinol
Divinol Spezialöl HGB 10W-30
STOU oil for engine, gearbox and hydraulics of agricultural and forestry machines
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-30
Divinol
Divinol Syntrac TS 10W-40
Synthetic-based STOU oil for agricultural and construction machinery, easy cold starting
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-40

Shell

2 products

Shell Engine oils

Shell Rimula R2 Extra 15W-40
Mineral multigrade oil for heavy duty diesel engines in normal service
- Heavy-duty diesel
SAE 15W-40
Shell Rimula Ultra 5W-30
Fully synthetic low-SAPS oil for high-capacity diesel engines
- Heavy-duty diesel
SAE 5W-30

Mobil

15 products

Mobil Engine oils

Mobil Delvac 1 5W-40
Synthetic heavy-duty diesel oil with long-drain capability, ACEA E4/E7, API CI-4 PLUS
- Heavy-duty diesel
SAE 5W-40
Mobil Delvac 1 ESP 5W-40
Synthetic heavy-duty diesel oil, mineral-oil compatible, ACEA E4/E7
- Heavy-duty diesel
SAE 5W-40
Mobil Delvac Legend 15W-40 Heavy Duty
Synthetic-blend heavy-duty diesel oil for on- and off-highway service, ACEA E3, API CH-4
- Heavy-duty diesel
- Cars
SAE 15W-40
Mobil Delvac Modern 10W-30 Full Protection
Synthetic-technology diesel oil for EGR and DPF engines, API CK-4, Volvo VDS-4.5
- Heavy-duty diesel
SAE 10W-30
Mobil Delvac Modern 10W-40 Super Defense
Synthetic-technology diesel oil for mixed fleets, ACEA E7, API CI-4, MTU Oil Category 2
- Heavy-duty diesel
- Cars
SAE 10W-40
Mobil Delvac Modern 15W-40 Full Protection
Synthetic-technology diesel oil for EGR and DPF engines, API CK-4, Cat ECF-3, ACEA E11
- Heavy-duty diesel
SAE 15W-40
Mobil Delvac Modern 15W-40 Super Defense V4
Synthetic-technology diesel oil for mixed fleets, ACEA E7, API CI-4, Cat ECF-2
- Heavy-duty diesel
- Cars
SAE 15W-40
Mobil Delvac MX 15W-40
Heavy-duty diesel oil for mixed fleets, ACEA E7, API CI-4, Volvo VDS-3
- Heavy-duty diesel
- Cars
SAE 15W-40
Mobil Delvac MX Extra 10W-40
Semi-synthetic heavy-duty diesel oil for mixed fleets, ACEA E7, API CI-4, MTU 2
- Heavy-duty diesel
- Cars
SAE 10W-40
Mobil Delvac Super 1400 15W-40
Heavy-duty diesel oil for severe service, MTU Oil Category 2, ACEA E3, API CH-4
- Heavy-duty diesel
- Cars
SAE 15W-40
Mobil Delvac Ultra 5W-40 Ultimate Defense
Synthetic heavy-duty diesel engine oil for severe service, long-drain, ACEA E4/E7
- Heavy-duty diesel
- High-speed marine
SAE 5W-40
Mobil Super Everyday Protection 5W-40
Engine oil for petrol and diesel engines without particulate filter, ACEA A3/B4
- Cars
SAE 5W-40

Mobil Agricultural multifunction oils

Mobil Agri Extra 10W-40
Semi-synthetic STOU oil for farm engines, transmissions, hydraulics and wet brakes
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-40
Mobil Delvac Modern 10W-40 Agri Universal
Semi-synthetic STOU oil for farm equipment, ACEA E3, John Deere JDM J27D
- Tractors (UTTO)
- Tractors (STOU)
SAE 10W-40

Mobil Marine lubricants

Mobilgard HSD 15W-40 CI-4
Multigrade oil for severe-service high-speed marine diesel engines, SAE 15W-40
- High-speed marine
SAE 15W-40

Caterpillar

2 products

Caterpillar Engine oils

CAT DEO ULS 10W-30
API CK-4 heavy-duty diesel engine oil for engines with aftertreatment, backward compatible
- Heavy-duty diesel
SAE 10W-30
CAT DEO-ULS 15W-40
API CK-4 heavy-duty diesel engine oil for engines with aftertreatment, backward compatible
- Heavy-duty diesel
SAE 15W-40

API standards

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