That's right where you want it. Less than 150° F is generally considered too cold, 275° F is generally considered the max for short durations. Automatic transmission oil can provide up to 100,000 miles of service before oxidation requires replacement, at an operating temperature of 175° F. Above this temperature, the oil oxidation rate doubles with each 20° degrees F increase in fluid temperature. At 195° F, you should plan on changing the fluid at 50,000 miles, etc.