Motor dielectric oil?

[FountainMan]

So the motor on my Kasco fountain has been having trouble lately. Tripping the circuit breaker constantly due to a faulty cable connection which is to be replaced. I finally remove it and attempt to fix, I drained the oil from the motor and am looking to replace it. I just don't want to put the wrong stuff in and screw up the motor. I've never replaced oil before and I have no clue what Kasco uses. I'll email them Monday.

So I'm assuming not many here are familiar with Kasco but many waterfall pumps are oil cooled too and I'm hoping some here are familiar with refilling the oil on waterfall pumps can point me in the right direction?