After the usual searches I found the factory units on most mowers used a 10w30 oil in them and Tuff Torq recommends a synthetic 50 weight motor oil for best function. I was looking at several threads on other sites regarding failures of the unit. I was thinking this thing needs an oil with some sort of EP additive to give it a fighting chance. I cannot find any info on using a hypoid gear oil in it. I emailed Tuff Torq about the compatibility of hypoid gear oil and they just advised me that 50 weight motor oil is the best due to viscosity. Nothing else.
I checked the viscosity chart and find that a 50 weight motor oil sits [censored] near where a 90 weight gear oil is.
Any thoughts?
I checked the viscosity chart and find that a 50 weight motor oil sits [censored] near where a 90 weight gear oil is.
Any thoughts?