Changing the engine, transmission, and rear axle oil, along with all filters, in a JCB 3DX involves a detailed process.

First, drain the engine oil and replace the oil filter. Then, remove and replace the transmission fluid and filter, ensuring everything is sealed tightly.

For the rear axle, drain the old oil, replace the gasket if necessary, and refill with new oil. Lastly, replace any air and fuel filters.

This comprehensive maintenance ensures the machine runs smoothly, prevents overheating, and extends the life of its components.