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Hy gard low viscosity12/27/2023 ![]() ![]() 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. I've seen the same thing with low-vis Hy-Gard, so I would say that's more equivalent to Hy-Tran.In terms of the JD motor oil, the tuffgard is made by Conoco and the Plus4 is made by Imperial. When the weather got hot, the trans oil light started coming on. ![]() A guy here bought a 4440, everything else he had was red, so he put Hy-Tran in it just to standardize. Posted 21:33 (#6605359 - in reply to #6605036) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Straight hydraulic oil (like Shell Tellus ) lacks friction modifiers. It has additives for hydraulic systems (zinc ) and friction modifiers for wet clutches. No, HyGuard is hydraulic/transmission fluid. Posted 22:24 (#6605438 - in reply to #6605043) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? When considering hydraulic oil, there is no heavy duty, super, ultra Posted 19:45 (#6605043 - in reply to #6605036) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Posted 19:42 (#6605036 - in reply to #6605030) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Makes sense though if they are different weights Had basically no Hyd functions at -20 while the other tractors were still stiff, but functional with co-op oil. Would make sense, I put hyguard back in my jd tractor recently, and with the cold weather, it is the most cold blooded tractor on the place this winter. Posted 21:07 (#6605294 - in reply to #6605264) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Posted 23:28 (#6605507 - in reply to #6605279) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? system, so in goes the Hy-Gard!! Edited by Bruce NW Ia 21:08 My 1959 Allis tractor manual says use 20W oil in the hyd. found some chart that compares ISO to SAE. ![]() I agree with Tim, HyGard is 15W-20W, Low Vis hy gard is 10W. Posted 21:02 (#6605279 - in reply to #6605264) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? I guess hydraulic oils use a different scale.Īre multi-viscosity fluids with high-viscosity index. I thought Hy-Gard was 20 weight, and Lo-Vis Hy-Gard was 10 weight. Posted 20:55 (#6605264 - in reply to #6605033) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Posted 20:03 (#6605102 - in reply to #6605033) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Posted 19:41 (#6605033 - in reply to #6605030) Subject: RE: New to Deere oil, is HY-Gard a heavy weight oil ? Posted 19:40 (#6605030) Subject: New to Deere oil, is HY-Gard a heavy weight oil ? New to Deere oil, is HY-Gard a heavy weight oil ?
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