crsutton81

Member
On the older equipment we have, we have always used straight 90 wt gear oil in the transmissions and gearboxes. Our supplier is telling me now that he is no longer able to obtain it, but can get 80w-90 in the GL-5 variety. Is this safe to use in transmissions such as the Farmall Super A's through the 140's along with auger / bushog gearboxes ?
 
On the older equipment we have, we have always used straight 90 wt gear oil in the transmissions and gearboxes. Our supplier is telling me now that he is no longer able to obtain it, but can get 80w-90 in the GL-5 variety. Is this safe to use in transmissions such as the Farmall Super A's through the 140's along with auger / bushog gearboxes ?
I use that of the new universal type trans/hyd oil in mine
 
On the older equipment we have, we have always used straight 90 wt gear oil in the transmissions and gearboxes. Our supplier is telling me now that he is no longer able to obtain it, but can get 80w-90 in the GL-5 variety. Is this safe to use in transmissions such as the Farmall Super A's through the 140's along with auger / bushog gearboxes ?
SAE 40 or 50 engine oil will be similar in viscosity (different viscosity scales) and has EP additives. Jim
 
On the older equipment we have, we have always used straight 90 wt gear oil in the transmissions and gearboxes. Our supplier is telling me now that he is no longer able to obtain it, but can get 80w-90 in the GL-5 variety. Is this safe to use in transmissions such as the Farmall Super A's through the 140's along with auger / bushog gearboxes ?
Most definitely , it’s the replacement oil to that old stuff. That’s what it’s for.
 
On the older equipment we have, we have always used straight 90 wt gear oil in the transmissions and gearboxes. Our supplier is telling me now that he is no longer able to obtain it, but can get 80w-90 in the GL-5 variety. Is this safe to use in transmissions such as the Farmall Super A's through the 140's along with auger / bushog gearboxes ?
80w90 is used in my Farmalls.
 
Most definitely , it’s the replacement oil to that old stuff. That’s what it’s for.
I remember some posts about the newer oil (GL-5) additives having a corrosion effect on the older tractors brass/bronze parts. Don’t know if it’s true or how long it takes to wear them. GL-1 oil (recommended) is tough to find. I did find an oil company in Texas that still makes it but that was a few years ago.
Edit: I see now that some of the GL-5 oils are yellow metal safe.
 
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I remember some posts about the newer oil (GL-5) additives having a corrosion effect on the older tractors brass/bronze parts. Don’t know if it’s true or how long it takes to wear them. GL-1 oil (recommended) is tough to find. I did find an oil company in Texas that still makes it but that was a few years ago.
Edit: I see now that some of the GL-5 oils are yellow metal safe.
Where is the brass
I remember some posts about the newer oil (GL-5) additives having a corrosion effect on the older tractors brass/bronze parts. Don’t know if it’s true or how long it takes to wear them. GL-1 oil (recommended) is tough to find. I did find an oil company in Texas that still makes it but that was a few years ago.
Edit: I see now that some of the GL-5 oils are yellow metal safe.
where is the brass on these old tractors ?
 
I told you the brASS is in the seat and the bronze is in the transmission.
I thought it was only in winter time when it got to -40 that’s what would freeze the balls of a brass monkey . It’s Ihc, no brass in these transmissions.
 
We use the 80-90 or if synthetic in truck rearends then a 75-90 and for the transmission just a 50 wt oil in there. If you use a heavier oil it gets stiff to shift in cold weather until it warms up some. Ran over a million miles on it with no problems and still going. It works less but harder now on the dump trailer pulling more weight.
 
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