I just bought a G2000 Kubota tonight with 2000 hours. 60" deck. With the Liquid Cooled 3 Cylinder Engine. It's a pretty clean machine and has all the maintenance records since day one. I got it home and mowed with it , and after 20 min I noticed its getting pretty hot. The gauge says it's running at normal operating temperatures but I feel like it's not reading accurately. When you open the hood you get a waft or hot air. The coolant reservoir is also almost empty which shouldn't help either but the radiator itself is full... Would a really low reservoir really cause the engine to run hotter than normal?