Skip to content

Car Radiator Flush

Radiator Flush

Getting your car's radiator flushed is an important maintenance step that should be performed ideally every 1-2 years. Over time, dust, rust, and other sediment can accumulate inside the lines. The passages inside the radiator are extremely narrow, and if they become plugged with buildup, the lack of flowing coolant will diminish the vehicle’s performance. Consistently getting the radiator flushed will prolong the life of not only your radiator, but your engine as well. There are times when a radiator flush WILL NOT be effective. If you have neglected to properly flush consistently, when the buildup becomes too great, there is no other option, but to replace the radiator unit itself. Do yourself and your car a favor and remember to schedule with your local auto mechanic to have your radiator maintained on time. Always schedule an inspection by a professional before you begin work.  If you want to attempt to flush your radiator by yourself, follow the directions we have detailed below.  If after you read through it and know you don't want to get your hands dirty and taking the time to figure out how to do it properly, just call us and we'll send a mobile auto repair mechanic out to you and get it done without all the stress.

How To Flush a Car Radiator

*Be sure to consult with a mobile mechanic before attempting to flush your car radiator by yourself

  • The first step to flushing your radiator is purchase a radiator flush solution. You can find this at any auto parts store. Once you have the fluid, make sure to read the label carefully, to note the safety warnings, and other hazards. Some fluid mixes come concentrated, and some come pre diluted. Take extra care to know which one it is you are purchasing so that you will have enough to finish your project.
  • ****WARNING **** Make sure to allow sufficient time, approximately 4 hours, for your car to cool before emptying the coolant from the radiator.***
  • Place an automotive bucket underneath the radiator drain “petcock” or drain hole if you prefer, and be cautious to not spill the liquid while you open the plug and begin draining to empty the coolant from your current radiator.
  • After removing the old coolant, replace the drain plug, and add the flushing solutions you purchased. Replace the radiator cap.
  • Start your car’s engine, and allow it to run for 15-20 minutes to ensure the flush as enough time to completely flow throughout the system. Turn off the car and again allow the system to cool before draining.
  • Next add regular water from your hose or water source and allow the drain to be kept open. Watch the bottom of the car, and when the water exiting the radiator runs clear, you are finished.
  • Replace caps, fill with fresh coolant, and enjoy a fresh new radiator.
Free Quote
Scroll To Top