Hi,
Did several searches of forums on this question but found nothing related, so I hope I'm asking this on the right forum:
Finishing up a rebuild of a steering box from a 1960 Ford tractor. Shop manual spec calls for 90W gear oil. These old boxes are famous for leaking/seeping even after a rebuild, new seals, etc. I've seen a recommendation to use 140W instead, but that's not available in less than 5 gal quantities - I need 1 qt.
I can buy 85-140 in quarts. Is 85-140 really 140W that acts like 85W when cold, or is it really 85W that acts like 140W when hot?
In our warm climate, cold-weather operation is not an issue.
Did several searches of forums on this question but found nothing related, so I hope I'm asking this on the right forum:
Finishing up a rebuild of a steering box from a 1960 Ford tractor. Shop manual spec calls for 90W gear oil. These old boxes are famous for leaking/seeping even after a rebuild, new seals, etc. I've seen a recommendation to use 140W instead, but that's not available in less than 5 gal quantities - I need 1 qt.
I can buy 85-140 in quarts. Is 85-140 really 140W that acts like 85W when cold, or is it really 85W that acts like 140W when hot?
In our warm climate, cold-weather operation is not an issue.