Its viscosity is comparable to a SAE 20 crankcase fluid or an ISO 68 industrial oil for general purpose applications. Hy-Gard viscosity places it between ISO 46 and 68 grades.Ħ24 ozAdditional informationWeight624 ozDimensions12 × 15.5 × 12 inSize5 Gallon Pail, 16 Gallon Pail, 55 Gallon Drum Hy-Gard fluid is a multi-viscosity fluid with a high-viscosity index. Hy-Gard transmission and hydraulic oil is a unique oil developed by John Deere engineers to meet the exact needs of John Deere machines. What viscosity is John Deere hydraulic oil? Hy-Gard oil can be used in most applications calling for 10W-30 or 5W-30 engine oil for transmission and hydraulic oils. Low-Viscosity Hy-Gard is compatible with hydrostatic fluid and can be added to systems, which contain hydrostatic fluid. Low-Viscosity Hy-Gard replaces the John Deere All-Weather Hydrostatic Fluid and should be used as a direct replacement for all applications recommending hydrostatic fluid. What is the equivalent to John Deere hydraulic oil? Petro-Canada Lubricants notes that the key difference between JDM J20A (which is replaced by the current JDM J20C or JDM 20D specification) is the addition of the Alli- son C-4 seal, oxidation, wear and frictional characteristics test requirements - a fact that is not commonly known. What is the difference between J20A and J20D? John Deere machine owners must place this type of oil within the transmission for the winter months. This oil is considered a winter grade lubrication fluid. In contrast, J20D transmission oil offers a low-viscosity fluid at room temperature. The J20D specification is the cold-temperature equivalent to J20C. It has a -50 deg pour point so low temp operation shouldn’t be a problem. Texas Refinery Corp’s Special Low Temp Universal Torque Fluid meets the JD J20D spec. Top notch products, but initial cost probably won’t be less. Is there a j20d fluid that meets C and D ratings?Īmsoil and Chevron have single products that meet BOTH the C and D rating. This is because it contains a polymeric viscosity improver. It also provides versatility across a range of equipment. It’s viscosity is perfect for John Deere equipment. The default hydraulic and transmission oil selected by them is the Hy-Gard hydraulic transmission fluid. John Deere engineers are selective about the fluid used. What type of hydraulic fluid does John Deere use? The viscosity of this fluid is equivalent to around SAE 10W-30. Mobil Fluid 424 is a mineral oil-based fluid. Before choosing the substitute oil, keep in mind that John Deere uses oils of viscosity 10W-30. With that being said, let’s dive into the substitutes for John Deere hydraulic oil. What is a good substitute for John Deere hydraulic oil? Therefore, you can only substitute the J20C with the J20D when the weather is warm. The J20D is low-viscosity hydraulic oil engineered for cold climates, whereas J20C is high-viscosity which is ideal in a warm climate. Therefore, it is crucial to know the right oil for your engine. But it makes sense, since Chevron was the company who pioneered Group III synthetic development and is the primary source for Group III base oil in the country.What is the difference between j20c and j20d hydraulic oil? It is a very high quality Group III synthetic. Just found out on the MSDS sheet for JD20D. the JD20D gallons are TY22000 the quarts are TY22035 The viscosity index has some bearing on the NOACK volatility, or "cook off" of the oil. You can have, say, a 10w30 conventional with a VI of around 140, and a 10w30 synthetic with a VI of 175. Viscosity index is the category of the base oil stock, with conventional oils down lower in number and higher end synthetic base oils up higher in number. Side note: viscosity index has nothing to do with viscosity "weight". Again, for my dollar, only JD20D is what I want. And the JD20c has a TBN of 11 whereas the JD20D has a TBN of 13. ![]() At best, it is a conventional/synthetic blend. In contrast the JD20C has a viscosity index of 140. For my dollar, I would only use the JD20D year round, irregardless of temperature and who is blending it. Since Mobil is the primary source of Group IV PAO base oil stocks in the country, I would suspect they might be the source blender for the JD20D. Even the Amsoil product only comes in at a 171 viscosity index. It has a viscosity index of 195, which puts it squarely into Group IV PAO synthetic territory. In terms of the JD motor oil, the tuffgard is made by Conoco and the Plus4 is made by Imperial.
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