Hydraulic systems are the heart of an excavator.Power, precision, lift capacity, digging strength — it all comes down to one thing: The hydraulic oil you choose. Pick the right oil, and your pumps, valves, cylinders, and final drives last thousands of extra hours.Pick the wrong oil, and you’ll destroy components faster than any operator mistake can. Most excavator owners know oil matters — but very few understand why it matters.This blog breaks down the science, the logic, a