Hustler super Z 2005 s/n 927038. I repaired an oil cooler leak. Hopefully installed the lines back to original. Dummy did not take before pictures. Ran mower for about 30 minutes. Using an infrared thermometer it reads 200 degrees on each pump. Cooler fan is good but of course very hot air on exhaust side. I use 15W50. Does anyone have a picture of the cooler lines and what temperature should the pumps get to. Runs fine but thinking temperature is too high. I read that 15W50 is good up to 220 degrees. Thank you