Use the empty jug from the distilled water you used earlier as a mixing container. Pour the antifreeze from the side of the spout to prevent spillage until the jug is halfway full. Fill the rest of the jug with distilled water. Purchase a 50/50 antifreeze mixture from an automotive store to avoid mixing the solution yourself. Check your vehicle’s manual to determine how much antifreeze you should add. Use a funnel to ensure all of the solution makes it inside. Pour slowly since the liquid may back up into the funnel. Make sure to fill the radiator to the fill line. The antifreeze won’t completely drain from the funnel, so turn on your vehicle with the heat on full blast to pull the remaining fluid in. Once the funnel is empty, remove it and replace the pressure cap. Let the car run for 15 minutes so the new antifreeze can be pulled through the entire system. Turn off the engine and let your car cool for 15 minute minutes before removing the pressure cap again. Check to see if the antifreeze is level with the fill line inside the radiator. If not, add more of the solution. Any other leftover solution can be poured into the overflow container or save it until the next time you need to flush your system.

How would you rephrase that briefly using Indonesian?
Campurkan 2 liter cairan antibeku dengan 2 liter air distilasi. Tuangkan campuran antibeku ke radiator. Nyalakan kendaraan untuk menarik cairan antibeku kembali ke sistem pendingin. Selesaikan radiator sampai penuh.