The closest Auto repair shop in Las Vegas NV is Qwest Automotive Service, they will definitely guide you with auto repair shops in Nevada, USA

How often should I get my oil changed? Our company agrees that a driver should have their fluid topped off every 3,000 to 7,000 miles or three months, However you can always refer back printable owner's manual which covers recommended intervals based on make and model of vehicle being driven; many new cars will tell us when they're due for service - remember: without an essential maintenance like this one (replaces lost fluids), internal cogs could turn into sludge preventing the car from running smoothly! , Visit Qwest Automotive Service at 5275 E Craig Rd, Las Vegas, NV 89115 or call (702) 641-0100 to schedule an appointment