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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | Stan ISO 46 is hydraulic oil. you would be closer to ISO 260 (SAE 50) or ISO 320 (SAE60). UTF (Universal tractor fluid) is simply mineral based hydraulic oil with viscosity modifiers and is used in everything from the transmission to the hydraulics to the axles on a transmission. It is generally a bit thick for hydraulics and a bit thin for axles and transmissions, however it is intended as a compromise so there is only 1 fluid used for service.
I'm with Crenwelge, Synthetic SAE 50 makes transmissions happy.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
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