How to maintain changan benben mini?

Hello, this car normally recommends the use of engine oil with viscosity grade of 5w-30, which is universal in all seasons. Just change it every 5,000 kilometers or half a year, then clean the carbon deposit on the throttle and nozzle every 20,000 kilometers, check and replace the spark plug every 40,000-60,000 kilometers, replace the air filter and air conditioning filter element every/kloc-0,000 kilometers, replace the gearbox oil every 40,000-60,000 kilometers, and replace the antifreeze and brake oil every two years or 40,000 kilometers.