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A. Castrol Transmax Offroad 30 is designed for powershift transmissions, final drives and wet-brake systems in off-highway equipment — earthmoving machinery, mining equipment and other heavy-duty off-road applications, and is also approved for related commercial vehicle powershift transmissions.
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.
A. Castrol Transmax Offroad 30 meets Caterpillar TO-4.
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.
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.
A. Castrol Transmax Offroad 30 carries ZF TE-ML 03C; and Allison C-4.
A. Caterpillar TO-4 is Caterpillar's specification for powershift transmission, final drive and wet-brake fluids used in off-highway equipment. The TO-4 specification covers the friction characteristics required for powershift wet clutches and the EP performance required for the final drive.
A. Caterpillar TO-4 powershift fluids are typically supplied as single-grade SAE 10W, 30W or 50W — the absence of viscosity-index improvers gives the friction stability required for powershift wet-clutch operation. SAE 30W (this product) is the standard powershift service viscosity.
A. Both are Castrol Transmax transmission fluids, but for different transmission types. Transmax Offroad 30 (this product) is a Caterpillar TO-4 powershift transmission fluid for off-highway heavy equipment. Transmax ATF DX III is a Dexron-class automatic transmission fluid for passenger car and commercial vehicle automatic transmissions.
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