320CL hydraulic oil

In sw Ga so not dealing with extreme cold. Burnt a hose and lost most all of oil in tank. What’s best to refill. I hear sae 30 or 15/40. Are there any other like iso32,46 etc. most of the regular hyd oils are 1/3 to 1/2 the motor oils. Don’t want to be cheap to the point of doing damage. Also did not want the $100 a pail cat fluid. Thanks

320CL hydraulic oil