The Multi-Grade Hydraulic Oil market is divided primarily by type, which determines formulation, performance envelope, and price premium. Mineral‑based oils dominate the volume segment because of their established supply chain and lower cost; they account for roughly 55 % of global sales, driving the bulk of market size in cost‑sensitive sectors. Synthetic oils, including polyalphaolefin (PAO) and ester blends, deliver superior viscosity stability, oxidative resistance, and low‑temperature flow, capturing about 30 % of revenue despite higher unit prices. Biodegradable formulations, typically based on ester or vegetable‑oil chemistries, address stringent environmental regulations in Europe and North America, contributing approximately 10 % of the market and commanding a niche premium. Finally, fire‑resistant oils formulated with phosphorus‑based additives serve high‑risk applications such as mining and offshore drilling, representing the remaining 5 % of sales. Together, these type categories shape the overall Multi‑Grade Hydraulic Oil segmentation, influencing both total volume and average selling price across regions.