Moreover, while Hy-Gard has an SAE rating of 10w30, that doesn’t mean any 10w30 is fine. If you use a type F viscosity, you’re going to damage your John Deere. Hy-Gard was designed to be thick and provide plenty of lubrication for your equipment. You can use Hy-Gard for bulldozers, small tractors, and more.įurthermore, you should never substitute anything for the transaxle. Hy-Gard is indeed expensive, but it was formulated specifically for the hydrostatic system present in most John Deere equipment. Also, there is a fair chance that you could void the warranty on your equipment. The reason is that hydrostatic systems are very sensitive to tampering. However, some people recommend that you never substitute for something else. Yes, you can substitute your John Deere hydraulic oil with another brand and formula. Now that you know there are substitutes out there that were designed to be the exact same as John Deere Hy-Gard, there is something you need to know. The only downside to using Mobilfluid 424 is that it is not synthetic.ĭisadvantages of Using a John Deere Hydraulic Oil Substitute Interestingly, Mobilfluid 424 is also much cheaper than John Deere hydraulic oil, as well as two other competitors: Triax Agra UTTO and Amsoil Tractor oil. Mobilfluid 424 has a viscosity index of 145, a pour point of -42☌, and is used for agricultural and construction equipment. The formula is made to increase wet brake friction and extend clutch life. Like John Deere Hy-Gard, Mobil’s 424 hydraulic oil and transmission fluid is resistant to oxidation and thermal breakdown. Furthermore, it has the additives required to lubricate and protect the engine from damage. When used in your tractor, the oil flows smoothly through the hydraulic system and enhances the performance of your machine’s engine. It meets the specifications for JDM J20C, meaning that you are going to get everything out of this fluid that you would expect from Hy-Gard. Out of all these options, Mobilfluid 424 is the best equivalent to John Deere Hy-Gard oil.
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