Oil & Fuel - NAPA Premium Heavy Duty Traactor Hydraulic and Transmission Fluid Specs (2024)

FAQs

What viscosity is tractor hydraulic transmission fluid? ›

Universal Tractor Hydraulic Fluid is a SAE viscosity grade 10W-30 and meets API GL-4 gear oil specifications.

Tractor hydraulic fluid—the most popular packaged item at Pack Logix—has several different names that all mean the same thing. You may see it labeled as tractor hydraulic oil, torque converter fluid, universal tractor transmission oils (UTTO), universal dynamic tractor oil (UDT) and others.

Hydraulic oil transfers power, while tractor fluid lubricates the moving parts within a transmission. Choosing the right tractor fluid and hydraulic oil can have an effect on the performance of your equipment.

Tractor fluids are about a 10W-30, or an ISO 68. If you use anything else you will destroy your wet clutch or wet brakes. If you use GL-5, you will also destroy the hydraulic system.

AW-46 oil is thicker and has a moderate viscosity, so it is recommended for use in temperate climates where weather is not extreme. A hydraulic system operating in a cold climate, however, would operate better with a lower viscosity oil like AW-32 because the thinner oil will be less resistant to flow on start-up.

ATFs are usually less viscous and designed to work under lower pressures and temperatures than hydraulic fluids. The operating temperature range of hydraulic fluids is larger i.e. they maintain their viscosity better in a broader temperature range. Also hydraulic fluids are very pure compared to ATFs.

"Is it all right to mix an R&O hydraulic oil with an AW hydraulic oil in a hydraulic application?" Mixing oils with different additive packages is never recommended. Doing so could compromise the additive performance of both constituents, cause corrosion of component surfaces and lead to increased mechanical wear.

As far as possible, it is always best to avoid mixing different hydraulic fluids.

Choosing a hydraulic fluid with the right viscosity is primordial for the overall efficiency of the hydraulic system. The fluid viscosity determines both the mechanical efficiency and the volumetric efficiency and sets the limits of the optimum operating range of a hydraulic system.

Most hydraulic systems will operate satisfactorily using a variety of fluids. These include engine oil, automatic transmission fluid and oil formulated specifically for the hydraulic compartment.

What's the difference between transmission fluid and hydraulic fluid? ›

Transmission fluid is enriched with additives to improve lubrication, minimize friction, and shield against wear and corrosion. In contrast, hydraulic fluid incorporates additives for anti-foaming, anti-rust, and anti-oxidation properties, along with viscosity stability under diverse conditions.

An automatic transmission is a hydraulic device. The suitability of the particular transmission fluid would depend on the hydraulic unit you want to put it in. If the operating temperature, flow rates, and operating pressure are close to the same. It will work fine.

Universal Tractor Fluid (UTF) is the multi-functional fluid formulated specifically for tractors and off-road equipment using a centralized system to lubricate the transmission, hydraulic system, clutches, wet brakes, pumps and other components.

Product Description. Mobil Agri Super™ 15W-40 is a high performance, multi-functional lubricant for most farm equipment applications. This STOU lubricant provides good performance in diesel and gasoline engines, transmissions, hydraulics, final drives and oil-immersed brakes operating in agricultural service.

"It is a common practice in the construction and mining industries to use engine oil SAE 10, SAE 20 or SAE 30 with the lowest API rating as a substitute for hydraulic oil ISO 32, ISO 46 or ISO 68, respectively for hydraulic systems of heavy equipment.

Transmission Fluid is essentially thin hydraulic oil. In order to effectively lubricate the delicate parts of the system, the viscosity of the oil is kept low - generally around 0W/5 or 5W/10. Most importantly it needs to be relatively free flowing in order to transmit power from the engine to the transmission.

The appropriate viscosity range for hydraulic oil varies depending on the type of hydraulic system and operating conditions. Most equipment works optimally with an operating viscosity range of 13 to 860 cSt, with the best-performing viscosity of the hydraulic oil typically between 16 cSt (80 SUS) and 40 cSt (180 SUS).