AG Lubricants · Inside Engineering

Product range

Twelve grades, five families, one blending standard.

Engine oils, gear oils, hydraulic fluids and brake fluid — filter by family or search by product name, viscosity grade or specification.

Product catalogue

Not sure which grade you need?

Answer two questions about the machine and how it is worked. Open the grade finder

Showing all 12 products

Super heavy duty ULTRA PLUS 15W-40 pack

Heavy Duty & Fleet

ULTRA PLUS 15W-40

Super high-performance diesel engine oil incorporating new-generation additive technology. State-of-the-art dispersancy gives greatly improved soot handling and optimised protection for critical components such as the valve train, in on-highway and off-highway vehicles.

Viscosity
SAE 15W-40
Performance
API CI-4/SL
Also meets
ACEA E7
Emissions
Euro I–VI
1 L5 L
Heavy duty DIESEL ENGINE OIL 15W-40 pack

Heavy Duty & Fleet

DIESEL ENGINE OIL 15W-40

Heavy-duty diesel engine oil for high-speed and heavy-load operation. Controls soot and keeps engines clean, with high thermal stability, oxidation resistance and good low-temperature flow for easy starting.

Viscosity
SAE 15W-40
Performance
API CI-4
Application
High speed, heavy load
Type
Heavy duty engine oil
Pack sizes on request
Gasoline SILK 8000 20W-50 pack

Passenger Car

SILK 8000 20W-50

High-performance gasoline engine oil formulated to perform in all driving conditions from mild to severe. Provides excellent engine protection against sludge and wear, and protects the engine in different weather conditions and harsh applications. Suitable for passenger cars, SUVs and vans.

Viscosity
SAE 20W-50
Performance
API SL
Type
Multi-grade gasoline
Application
Cars, SUVs, vans
1 L
API GL-5 TRANS HD 1405 85W-140 pack

Transmission & Gear

TRANS HD 1405 85W-140

High-performance extreme-pressure (EP) gear oil formulated from high-quality base oils and advanced additives to provide outstanding load-carrying capacity, excellent wear, rust and corrosion protection, ensuring smooth gear operation and extended service life.

Viscosity
SAE 85W-140
Performance
API GL-5
Application
Hypoid axles, high load
Type
Automotive gear oil
4 L
API GL-4 TRANS HD 85W-90 pack

Transmission & Gear

TRANS HD 85W-90

Heavy-duty gear oil manufactured from high-quality base oils and high levels of extreme-pressure additives to provide outstanding wear protection. Recommended for a wide variety of manual gear applications including synchroniser-fitted passenger and commercial vehicles.

Viscosity
SAE 85W-90
Performance
API GL-4
Application
Manual transmissions, gearboxes
Type
Automotive gear oil
4 L
API GL-4 TRANS EP 904 SAE 90 pack

Transmission & Gear

TRANS EP 904 SAE 90

Premium-quality extreme-pressure (EP) gear oil formulated from high-quality base oils and advanced additives to provide outstanding load-carrying capacity in gear applications where API GL-4 performance is required. Excellent protection against wear, rust and corrosion.

Viscosity
SAE 90
Performance
API GL-4
Application
Manual transmissions, differentials, gearboxes
Part number
30100090-PBK004F
20 L
API GL-5 VEHICLE GEAR OIL SAE 140 pack

Transmission & Gear

VEHICLE GEAR OIL SAE 140

Automotive gear oil for applications where the OEM specifies API GL-5 performance. Silicate and phosphate free with long-life protection, giving excellent wear and load protection, superior oxidation and thermal stability, and smooth gear operation.

Viscosity
SAE 140
Performance
API GL-5
Formulation
Silicate & phosphate free
Type
Automotive gear oil
4 L
ISO 10 HYDEN AW 10 pack

Hydraulic & Industrial

HYDEN AW 10

Premium-quality antiwear hydraulic oil formulated from high-quality base oils and advanced additives to provide outstanding wear protection, rust and corrosion protection and oxidation stability, with excellent performance in hydraulic systems operating under a wide range of conditions.

Grade
ISO 10
Type
Premium antiwear hydraulic
Performance level
ISO 10
Application
Hydraulic systems
20 L
Most specified HYDEN AW 46 pack

Hydraulic & Industrial

HYDEN AW 46

Premium-quality antiwear hydraulic oil formulated from high-quality base oils and advanced additives to provide outstanding load-carrying capacity and excellent wear, rust and corrosion protection, ensuring smooth operation and extended service life of hydraulic systems.

Grade
ISO 46
Type
Premium antiwear hydraulic
Performance level
ISO 46
Application
Mobile & industrial hydraulics
20 L
ISO 68 HYDEN AW 68 pack

Hydraulic & Industrial

HYDEN AW 68

Premium-quality antiwear hydraulic oil formulated from high-quality base oils and advanced additives to provide outstanding load-carrying capacity and effective protection against wear, rust and corrosion, ensuring smooth hydraulic operation and longer service life.

Grade
ISO 68
Type
Premium antiwear hydraulic
Performance level
ISO 68
Application
High-temperature hydraulics
20 L
Safety critical ULTRA SAFE 4 DOT 4 pack

Coolants & Specialty

ULTRA SAFE 4 DOT 4

High-performance synthetic brake and clutch fluid formulated to provide excellent braking performance and high-temperature stability. It resists vapour lock and ensures reliable braking performance and longer system life. Suitable for disc and drum brakes and most ABS systems.

Type
DOT 4 synthetic
Performance
FMVSS No. 116 DOT 4
Also meets
SAE J1704, ISO 4925
Application
Brake & clutch, ABS
0.5 L
Ready to use E-PULSE LC COOLANT FCEV pack

Coolants & Specialty

E-PULSE LC COOLANT FCEV

Ready-to-use low-conductivity coolant for fuel cell electric vehicles. Low and high temperature conductivity from 5 to 45 °C, with corrosion protection for fuel cell system components and compatibility with all cell running system components. Green formula.

Type
LC coolant, FCEV
Performance
ASTM D3306, BS 6580
Directions
Ready to use — do not dilute
Range
5–45 °C
2 L

01 / Choosing a grade

Not sure which oil the machine takes?

Three things settle almost every specification question.

The builder’s manual gives a viscosity grade (for example SAE 15W-40) and a performance level (for example API CK-4). Match both. A higher performance level is normally safe; a lower one is not, and a thicker grade than specified can starve a cold engine at first crank.

A truck that spends its life loaded on gradients is under far more thermal stress than the same truck on flat distribution work. Where duty is severe or drains are long, we will usually point you at the synthetic-blend option rather than the mineral one.

Drums are cheaper per litre but only if you can dispense cleanly and turn the stock before it ages. For low-volume lines, 20-litre pails keep contamination out and stock fresh. We are happy to advise on the mix.

Yes. Technical data sheets and safety data sheets are available for every grade on request — tell us which products you need and we will send the current revisions.

Send us the fleet list. We will send back the grade list.

Our technical team will match every machine you run to a grade, a pack size and a service interval — and flag anywhere you are currently over- or under-specified.