LUKOIL GEYSER BIO S is a high-quality, synthetic, zinc-free and biodegradable hydraulic oil based on saturated, synthetic esters and advanced additive technology. This product is in accordance with manufacturer's instructions, among other things, excellent for year-round use in highly loaded hydraulic systems of construction, agriculture & forestry, mobile devices and wastewater treatment plants. The balanced, low-ash formulation is the basis for maximum oil change intervals and offers the best possible protection against wear and corrosion, rapid air separation and low tendency to foam with the lowest possible environmental impact. When converting from mineral to rapidly biodegradable hydraulic oil, we strongly recommend that you follow the conversion guideline enclosed with the product data sheet!