It I add the proper amount of 100% to a water-filled cooling system, will it mix quickly to 50/50 inside the engine?

But don’t do it today: it’s the 13th.

[image] Cavell: How did your car get to 100% water concentration in cooling system? Say it holds 8 quarts of 50/50 mix, old coolant I want to remove and refill with a fresh 50/50 mix . I drain 5 quarts, b/c that’s all that’s possible to drain from the radiator. Then i flush the remaining 3…

[image] George_San_Jose1: One podcast mechanic (pro) says this won’t work, at least on certain cars, it won’t mix. Nonsense. Water mixes easily and quickly with coolant, it would have to be totally isolated from the cooling system not to mix after a few minutes with the thermostat open.

[image] George_San_Jose1: How much driving will it take to mix throughly to 50/50? It will take about 60 seconds to mix the coolant inside the engine, about 4 miles to mix the coolant in the radiator and engine. Start the engine with the heater hoses disconnected, you will see how effective …

[image] Nevada_545: You have replaced the coolant in your truck 22 times in the past, now you are concerned about procedure? Should I simply ignore the claim by a pro mechanic that coolant and water don’t mix properly inside the engine?

It it were me. I’d just remove the drain plugs from both sides of engine block after draining the radiator. [image] And after closing things back up, refill the cooling system with a 50/50 mix of coolant. Tester

[image] Tester: remove the drain plugs I’ve tried to remove the Corolla’s drain plug. Easy to access, but very stubborn, refuses to budge with the typical amount of torque I use on ordinary fasteners. . If I apply too much force it might damage the block, a step in the wrong direction. . B…

[image] Nevada_545: ou have replaced the coolant in your truck 22 times in the past, That’s probably right … lol … .

[image] George_San_Jose1: refuses to budge with the typical amount of torque I use on ordinary fasteners Did you try hitting it with your purse? Tester

I don’t think that would work. But I’ll give it a try next time I’m under the car and have a purse nearby.

[image] George_San_Jose1: Should I simply ignore the claim by a pro mechanic that coolant and water don’t mix properly inside the engine? Absolutely-that’s nonsense. Automobile water pumps put out tens of gallons per minute, plenty enough to mix thoroughly in a few minutes.

How well does coolant mix inside the engine?

Maintenance/Repairs

Tester December 14, 2024, 12:28am 14

It it were me. I’d just remove the drain plugs from both sides of engine block after draining the radiator.

And after closing things back up, refill the cooling system with a 50/50 mix of coolant.

Tester

Topic		Replies	Views
Bogus or not? Coolant won't mix in engine Maintenance/Repairs	33	4580	August 9, 2013
Does coolant mix itself in the engine Maintenance/Repairs	6	17426	July 4, 2017
How to measure antifreeze % in coolant in car? Maintenance/Repairs	25	14237	June 7, 2009
Filling Coolant with Block Empty Maintenance/Repairs	57	90475	May 7, 2018
How long to let the coolant circulate before testing it with a hydrometer? Maintenance/Repairs pontiac , montana	9	12755	July 14, 2016

How well does coolant mix inside the engine?

Related topics