Lubricating oil 390

turbine engine

Product overview
AeroShell Turbine Oil 390 is a 3 mm²/s synthetic diester turbine oil formulated to improve auxiliary power unit (APU) starting reliability after cold soak, reducing viscous drag at very low temperatures.

Features and benefits

• Reliable cold-soak starting: Much lower viscosity at –40°C compared with standard 5 mm²/s oils, decreasing viscous drag and improving APU start performance.
• Supports ETOPS operations: Enhanced cold-start reliability helps maintain ETOPS availability in extreme temperature conditions.
• Reduced APU maintenance: Lower component wear during start-up, contributing to reduced maintenance interventions and costs.

Specifications & approvals
British: Def Stan 91-94
Russian: IPM-10; VNII NP 50-1 4f and 4u; 36Ku-A
Joint Service Designation: OX-7
Airbus: Consumable Material List (CML) Reference 03APB2
Honeywell: GTCP 30, 36, 70, 85, 331 and 660 APUs, starters and turbocompressors
Pratt & Whitney: APS 500, 1000, 2000, 3000 & 5000

Applications
AeroShell Turbine Oil 390 is designed primarily for turbojet and turbine engines and is fully approved for use in a wide range of auxiliary power units (APUs). It mitigates the effects of cold soak that can cause hung starts by maintaining substantially lower viscosity at –40°C (typically ~2,000 mm²/s) versus standard 5 mm²/s oils (which can reach ~10,000 mm²/s).

Health, safety and environment

• When used as recommended and with good personal hygiene, this product is unlikely to present significant health or safety hazards.
• Avoid skin contact; wear impervious gloves when handling used oil. After skin contact, wash thoroughly with soap and water.
• Protect the environment: collect and dispose of used oil at an authorised facility. Do not discharge into drains, soil or water.

Typical physical characteristics
Typical characteristics are representative of current production; variations may occur.

Technical characteristics

• Commercial name: AeroShell Turbine Oil 390
• Base oil and viscosity: 3 mm²/s synthetic diester
• Cold-soak performance: Significantly lower viscosity at –40°C compared with standard 5 mm²/s oils (typical increase to ~2,000 mm²/s vs ~10,000 mm²/s)
• Primary use: Improved performance for turbojet engines and APUs to reduce hung starts and viscous drag after cold soak
• Approvals/specifications: Def Stan 91-94; IPM-10; VNII NP 50-1 4f and 4u; 36Ku-A; Joint Service Designation OX-7; Airbus CML Reference 03APB2; Honeywell GTCP series; Pratt & Whitney APS series