Home » Easy methods to flush engine coolant | Autoblog Wrenched

Easy methods to flush engine coolant | Autoblog Wrenched

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Do not let your engine overheat! Be sure to change your engine coolant. Don’t fret if you do not know how… We’ll present you on this episode of Wrenched!

Watch all of our Autoblog Wrenched movies for extra recommendations on diagnose, repair, and modify automobiles from skilled detailer Larry Kosilla. When you’re at it, try Larry’s different automobile cleansing and upkeep video sequence Autoblog Particulars!

Supplies Used:

Directions (Video Transcript):

[00:00:00] – [Host] Each two years the corrosion safety inside our engine’s cooling system deteriorates leaving your aluminum radiator, heater core, water pump and cylinder heads uncovered to sludge stuffed, rusted goop doubtlessly inflicting the engine to overheat. Happily, it is a straightforward repair, and listed here are the instruments you may have to do it your self: screwdriver, catch can, distilled water, engine coolant, gloves, security glasses, primary instruments, rags and a funnel. I am Larry Kosilla, pro-detailer

[00:00:30] and coach for the final 15 years, however in terms of what’s beneath the hood, I am the scholar. Comply with me as specialists educate me diagnose, repair and modify automobiles on Autoblog‘s Wrenched. So how typically must you change your coolant? – On most autos, it is best to change your coolant each 30,000 miles. Over time, coolant can develop into acidic and it’ll finally break down all of the steel parts inside your engine. – [Larry] First, we have to let the engine quiet down in order that we do not get burned or have pressurized antifreeze shoot out of the radiator

[00:01:00] if opened when scorching. Keep in mind, antifreeze is a poisonous fluid, so take excessive care. Whereas we’re ready for the automobile to chill, Joe has me verify the proprietor’s guide to see how a lot coolant the system requires and what sort of coolant the producer recommends. With the hoses cooled to the contact, open the radiator cap whereas holding a rag in case the coolant shoots out. Subsequent, seek for the petcock on the backside of the radiator and transfer your catch can into place. If there’s not a petcock current, then merely take away the bottom hose related

[00:01:30] to the radiator core, that’ll work as nicely. Have in mind, if there is a protect on the underside of the engine, you may most probably have to take away it earlier than you’ll be able to achieve entry to the petcock. Twist the knob and permit the petcock to empty for the following couple of minutes till it begins to drip. At this level, tighten the petcock or substitute the bottom hose after which head again to the highest of the engine. Now though lots of fluid got here out, it is truly not all that is in your automobile’s plumbing system. At chilly temperatures, your engine’s thermostat is closed,

[00:02:00] trapping the outdated coolant behind it particularly in your heater core. That is what a typical automobile thermostat appears like. On this cool demonstration, we used a blow torch to imitate your engine’s coolant getting heat from driving and inflicting the valve to open, Likewise when it it cools, it is going to shut trapping the fluid behind the valve which must be changed as nicely. Subsequent, fill your radiator reservoir with distilled water. The reservoir could have hoses related to the radiator in case you have hassle discovering it.

[00:02:30] As soon as full, substitute the cap after which begin your automobile. Permit the car to rise up to working temperature along with your warmth on excessive. It will trigger the thermostat to open and flush the distilled water again by means of the engine block and heater core chasing out the remaining fluid, therefore the identify coolant flush. After 10 minutes or so, flip the engine off and let the automobile utterly cool as soon as once more. Then, reopen the petcock or take away the decrease hose as soon as once more to get the final little bit of soiled fluid out. Then tighten the petcock or reattach the hose,

[00:03:00] primarily repeat the identical course of as you probably did earlier than. You should definitely correctly get rid of the spent fluid. That is poisonous and have to be disposed of correctly. Examine your native auto elements retailer to see in the event that they recycle or can advocate the place to go. Now that almost all, if not all of the fluid has been flushed, fill your radiator with 50% coolant and 50% water. Auto elements shops do supply premixed 50-50 coolant gallons for comfort, however keep in mind there’s already a little bit of leftover water within the system from the final flush so maintain that in thoughts.

[00:03:30] We determined to go along with 100% coolant and blend it with water 50-50 ourselves. So for this specific automobile, it is three quarts of concentrated coolant blended with two and three quarters quarts of distilled water for a complete coolant capability of six quarts as really helpful in our proprietor’s guide. It is also really helpful to interchange the coolant with the identical colour or model coolant beforehand present in your automobile to keep away from corrosion inhibitor co-mixing points. Defending the steel radiator from growing rust

[00:04:00] is crucial to keep away from forcing tiny bits of oxidized shavings by means of the water pump and subsequently the remainder of the engine and heating system. Altering your coolant can prolong the life of those elements and prevent cash and a headache sooner or later. For extra how-to automobile restore movies go to autoblog.com/wrenched. I am Larry Kosilla from ammonyc.com as at all times, thanks for watching. (upbeat hiphop music)

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