My Toro 524 manual says to use SAE 90 EP gear oil in the auger gear case. This is what was posted on tractorbynet forum about substituting a regular 90W gear oil:
"The question in my mind is the Gl-4 or Gl-5. From what the guy at Mobil told me and what I read on google searches they are used for the same thing but different applications. Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."
The quest is who sells it, at a reasonable price, I can't seem to locate it. Does anyone sill make it?
"The question in my mind is the Gl-4 or Gl-5. From what the guy at Mobil told me and what I read on google searches they are used for the same thing but different applications. Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."
The quest is who sells it, at a reasonable price, I can't seem to locate it. Does anyone sill make it?