I was reading in my owners manual for the 196? something the other day
and it stated that using other than hy-tran in the lift and transmission would void the warranty. So, this tells me that they feel the hy-tran is the
better fluid. I have gotten 1 gal and 2 gal containers from four different
Case IH dealers within 125 miles of each other.
Sounds to me like your dealer just doesn't want to handle smaller containers.
I would vote for going with the hy-tran after you replace the seals, etc.
I had to replace the manifold pipes on the '48 this spring. It previously
had oil in it and I replaced the seals and purged the system and filled
with hy-tran fluid. So far it works great.
Just a little input.