Small loss of coolant & PS fluid over 6 months
2014 Nissan Altima. 4 cyl. 40K miles. The coolant reservoir empties over a 6 month period. It also loses about 1/2 oz of PS fluid. There are no visible leaks in the engine compartment, hose fittings or on the ground. Neither reservoir appears to have a crack. It does not run hot, nor does the PS system make any funny noises. There is no exhaust smoke. It does not use any oil between changes. It has been on a lift & no leaks were seen. I'm guessing bad radiator cap but seek help.