What was found
RNO FLIGHT NR 2258: DURING TAXI OUT TO THE DEPARTURE RUNWAY, COMPANY ADVISED THAT FLUID WAS FOUND WHERE THE NOSE GEAR WAS PARKED EARLIER AT THE GATE. UPON RETURN TO THE GATE, THE NOSE GEAR WAS FOUND FULLY COMPRESSED AND A TRACE AMOUNT OF FLUID WAS FOUND LEAKING NEAR THE NOSE GEAR/TUG HOOK UP. MAINTENANCE C/W NITROGEN SERVICE IAW Q400 MM TASK 12-10-32-610-801. NO LEAKS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.