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Castrol - Transmax Axle EPX 80W-90, Gear/Transmission Oils - 20 Litre
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Technical Specification
PRODUCT NUMBER PRD00003251PRD00003009PRD00003014PRD00003011PRD00003017
Density, 15°C 0.8960.9090.8680.9090.868
Flash Point (COC) 173178178162
Kinematic Viscosity @40°C 43192.843192.8
Pour Point -24-15-45-15-45
SAE 80W-9085W-14075W-9085W-14075W-90
Volume 2082020208208
Viscosity Index 1019615696156
Oil Type Fully SyntheticFully Synthetic
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Q 1. What axles is Castrol Transmax Axle EPX 80W-90 designed for?

A. Castrol Transmax Axle EPX 80W-90 is a multipurpose axle oil for use in differentials, final drives and other applications requiring an extreme-pressure gear oil to API GL-5 specification — passenger car, light commercial vehicle and commercial vehicle axles.

Q 2. What is an API/ACEA classification?

A. API and ACEA are the universal lubricant performance standards every reputable oil meets. They are your baseline check — match the code your handbook specifies (e.g., API CI-4 or ACEA E7 for heavy-duty diesel) and the oil is technically suitable for your machine. Every oil on our site lists its API and ACEA classifications.

Q 3. What performance classification does Castrol Transmax Axle EPX 80W-90 meet?

A. Castrol Transmax Axle EPX 80W-90 meets API GL-5.

Q 4. What is an OEM Specification?

A. An OEM Specification is the lubricant requirement set by a vehicle or equipment manufacturer (e.g., MB 228.3, VW 504.00). When an oil lists the code, the oil manufacturer has developed and tested it to meet the criteria the equipment manufacturer requires. Match the code in your handbook and you have a lubricant engineered for your machine.

Q 5. What is an OEM Approval?

A. An OEM Approval means the oil has been formally tested and signed off by the equipment manufacturer and listed on their official approved-products register (e.g., MB-Approval 228.3). An Approval confirms the oil is recognised by the equipment manufacturer for service use in their machines.

Q 6. What OEM manufacturer approvals does Castrol Transmax Axle EPX 80W-90 carry?

A. Castrol Transmax Axle EPX 80W-90 carries MAN M342 M; and ZF TE-ML 05A.

Q 7. What does 'EPX' mean in Castrol Transmax Axle EPX?

A. EPX in this context indicates the Extreme-Pressure additive system in the Castrol Transmax Axle range — the EP additive package required for API GL-5 hypoid axle service.

Q 8. What is the difference between Castrol Transmax Axle EPX 80W-90 and 85W-140?

A. Both are Castrol Transmax Axle EPX mineral API GL-5 hypoid axle oils with the same EP additive system. EPX 80W-90 (this product) is the standard general-service viscosity. EPX 85W-140 (15DB2C) is the heavier viscosity for heavily loaded or hot-running axles where a thicker oil film is required.

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