![]() ![]() For example, it may not be OK to use coolant/antifreeze designed for Grand Cherokee on a Honda Civic. Not all coolants enhance performance in specific cars. For instance, some coolants are designed for high performance, and we also have coolants for hot weather. Note also that the coolant you use must match the manufacturer’s specifications. Some Mercedes cars, for instance, would have the coolant drained/filtered and reused permanently. American vehicle manufacturers may recommend 150,000 miles or 10 years, depending on the vehicle. In some older Asian vehicles, manufacturers recommend draining or flushing coolant after 2 years, notwithstanding the mileage. Your owner’s manual specifies the manufacturer’s recommended interval, which you should follow. Note that you do not necessarily have to change your car coolant after 5-10 years. If your car coolant has not been changed in 10+ years, or you are not sure about any recent changes, you can flush and replace coolant or antifreeze. Depending on the automaker, the coolant might lose its protective properties after 5 years. Most of the time, coolant older than 5 years in a car may be okay. Yes, a car engine coolant needs to be drained after a while. Meanwhile, how much coolant does your car need when empty? Does car engine coolant need to be drained? The reason is that you would normally find this amount when draining coolant into a basin or fluid bucket. Typically, there are between 1½ and 2 gallons of coolant in the engine block. Read also: car runs okay but starting is a problem How much coolant is in the engine block? Also, overfilling coolant or antifreeze can damage electrical components, especially if the overflow touches the engine wiring. You might find a coolant puddle underneath your vehicle if the hose overflows. Sometimes, an overflowing hose removes excessive coolant from the engine block. You may have to replace the thermostat, which wears off over time. It is advisable to check the coolant system for leaks when draining worn-out coolant or antifreeze from the engine block. If there is still coolant, you can allow it a longer period to drain out before replacing the hose. Make sure to replace the hose from the engine block to avoid draining the new coolant. Turn off the idling engine and add coolant. Meanwhile, how long can a car remain idle? Some experts recommend idling the car engine for a few minutes after draining the coolant from the engine block. You may now remove the radiator cap and flush it with water using the regular hose. You may use a bucket to collect the worn-out coolant/antifreeze. Next, pull the hose from underneath the radiator for the coolant to pour out. It usually looks like bolts in the block that do not hold anything. You can find it closer to the flywheel housing, the outer part of the engine pan. ![]() It is a very simple, time-honored and cheap method of changing the coolant.Where is the coolant drain plug on the engine block? You can find the coolant drain plug on the rear of the engine block, typically somewhere near the bottom, but not the exact position with the oil pan. Why anyone would want to do it any other way is beyond me. And there is no need to futz around with removing the block drain plugs, shop-vacs, compressed air, or anything else. This method removes as much of the coolant, that is left in the block and heater core after draining, as possible. The water left in the block when you're done with this quick and easy flush can be counted towards the water that you'll add to the coolant to arrive at a 50/50 mix. Better yet, just drive it around for 15-20 minutes.ģ) Drain the system again, reinstall the stat, if it was removed, and refill with the appropriate amounts of coolant/antifreeze and your choice of water.Ĥ) Repeat the drain and flush if needed, in your case once should be enough.ĥ) A gallon and a half of water, 6 liters, should be all you need for the flush. If you leave the thermostat in be sure that the stat opens, then run it a little while longer. You may want to turn the heater on, depending upon how your system is set up, to flush the heater core. If you want to get what is left in the block out of there, the easiest, hassle-free way to do that is like this:ġ) Drain the cooling system, then refill with your choice of water.Ģ) Run the engine, with or without the thermostat (I like to pull the stat). If you're confident the cooling system is clean then just drain what's in there as best you can and refill. You may want to consider that if you have a shop-vac. I've heard of some people having success with the shop-vac method of vacuuming out the engine block, as Mr.Incredible mentions. Falcon - No, compressed air isn't going to get below the leftover coolant in the block and lift it out. ![]()
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