The Complete Guide to AMSOIL Synthetic Hydraulic Fluid
How long does AMSOIL hydraulic fluid last?
AMSOIL Synthetic Anti-Wear Hydraulic Oil is engineered for service intervals up to 12,000 hours, approximately 6x longer than conventional anti-wear hydraulic oil. Actual life depends on filtration quality, contamination, and operating temperature; pair with high-efficiency filters and periodic oil analysis to maximize uptime.
Is synthetic hydraulic fluid better than conventional?
Yes. Synthetic hydraulic oil delivers superior shear stability, oxidation resistance, low-temperature fluidity, and wear protection. That translates to longer drain intervals, less pump and valve wear, less varnish, and reliable cold starts on excavators, skid steers, and tractors that run year-round.
Why ISO 46 dominates mobile hydraulics
ISO viscosity grade 46 is the sweet spot for the vast majority of mobile equipment, excavators, skid steers, dump trucks, telehandlers, and industrial presses. It pumps reliably at cold start, holds film strength at full operating temperature, and stays in grade under the high-pressure shearing inside piston pumps. AMSOIL AWI ISO 46 covers most of these applications with a single bottle.
When to use biodegradable hydraulic oil
If your equipment operates in or near waterways, forests, farmland, or municipal areas, AMSOIL Biodegradable Hydraulic Oil (BHO) protects against the cost and liability of a hydraulic leak. It meets EPA Vessel General Permit (VGP) requirements as an Environmentally Acceptable Lubricant and biodegrades per OECD 301B, without sacrificing the wear protection or service life of a premium synthetic.
Tractor UTTO: one fluid for the whole machine
Most modern tractors share a single reservoir for hydraulics, transmission, wet brakes, and PTO. AMSOIL Synthetic Tractor Hydraulic/Transmission Oil (ATH) is a Universal Tractor Transmission Oil (UTTO) that meets John Deere J20C/D, Case MS 1207/1209/1210, New Holland 134D, and Kubota UDT specifications, one bottle for the whole fleet.