I just picked up a GT14 with a snowblower to do my driveway. The guy I bought it from picked it up from a neighbor to repair and flip. He said he had all the hydraulic lines replaced. We noticed the snowblower would lift really slow so he kept adding hydraulic fluid (not oil, like clear hydraulic fluid from a gallon jug) to the reservoir near the battery as it bled out the air.
Fluid was added until the reservoir by the battery was full.
Now I am reading that it should have 5W-30, not hydraulic oil.
Should I drain it all out and add 5W-30?
Also, the manual states oil should be added from a plug at the rear of the transmission and that is how the fill level is checked. Is the transaxle overfilled?