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coolant

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How to Check the 5 Essential Fluids in Your Car
Checking your oil and adding engine coolant, brake fluid, power steering fluid, and windshield washer fluid are essential for maintaining your car.
The Best Tool to Eliminate Air Bubbles
Air bubbles can form while mechanics perform service on coolant systems. A vacuum coolant filler helps eliminate this problem to avoid serious damage.
The Best Tool to Find Coolant Leaks
Diagnosing a car issue can be a tricky without proper tools. A coolant pressure tester is useful for diagnosing overheating issues and coolant leaks.
How To Keep Your Car From Overheating
Monitoring your coolant level, turning the A/C off in very hot weather, and regular inspections will help you avoid having an overheating car.
How to Replace a Coolant Reservoir
A coolant reservoir is at fault if coolant is leaking underneath the vehicle or if the coolant sensor remains on all the time.
5 Commonly Overlooked Vehicle Maintenance Items
Brake fluid, auto transmission fluid, and coolant flushes, as well as cabin filter changes and valve adjustments, are all important services.
The Best Tool to Reach Hose Clamps
Hose clamps are present in most cars, but can be hard to reach. Remote access hose clamp pliers solve this common issue for automotive technicians.
How to Replace a Cylinder Head Coolant Temperature Sensor
Signs of coolant temperature sensor failures include sluggish acceleration, hard starting, and a Check Engine or Service Engine Soon Light.
What Does the Coolant Temperature Warning Light Mean?
The coolant temperature warning light turns on when your engine is sensed to be too hot and is at risk of damage from overheating.
How to Replace a Radiator Hose
The radiator hose is an important part of your vehicle’s cooling system. The hose carries the coolant to the radiator, where the fluid is cooled, then back to the engine...
How to Use Engine Block Sealer to Repair a Head Gasket Leak
Head gasket leaks occur when engines overheat and can be costly to repair. Engine block sealer can be a quick and easy alternative for minor cases.
How to Calculate the Concentration of Coolant in a Car
A car cooling system works to transfer heat from the engine. Check antifreeze level and condition, and mix coolant with water to prevent overheating.
How to Replace a Coolant Level Sensor
Coolant level sensors are faulty if the coolant level sensor light stays on extensively or the engine overheats without the light coming on.
How to Replace a Coolant Temperature Sensor
The coolant temperature sensor switch is not working if the engine emits black smoke. The switch may have failed if the car gets poor fuel economy.
How to Replace a Car Surge Tank Hose
Replacing a surge tank hose involves working on the coolant system, which can burn you when the engine is hot. Stay safe by waiting for it to cool.
How to Remove and Replace a Heater Control Valve
The heater valve is integral to a vehicle’s cooling system. Replacing one requires a new valve, some basic tools, and fresh coolant.
How to Replace a Coolant Tube
The bypass hose in the coolant system may have failed when the coolant level is low and there is a visible leak underneath the vehicle.
How to Replace a Coolant Vacuum Valve Switch
A vacuum line attaches to the vacuum switch in your car as part of the engine’s heating and cooling system. A faulty switch can break your heater.
How to Find the Source of a Coolant Leak Faster and More Accurately
Keeping a good coolant level in your car is necessary to avoid overheating. If you think there is a leak, find where it's coming from to fix it.
How to Top Off Car Coolant
Coolant, also known as anti-freeze, needs to be kept at a certain level to prevent car engines overheating and damaging the engine.

Related questions

Question
My car started overheating and I believe it was because of the coolant because I put some more and stopped
Hi...If there is an obvious leak, the fastest way to resolve this is to request a leak diagnostic. If simply "one" leak point is found on inspection, the responding certified mechanic will simply identify the parts required to fix it...
Question
How much does it cost to replace the coolant lines and the upper/lower oil pan gasket?
Billing question sent to CS for the cost to replace the coolant hoses by the turbo and the engine oil pan gasket.
Question
Replacing underbody A.C.coolant hoses
Hello. I would need to know what kind of vehicle this is to be able to provide more information. Typically a leak in the rear of the vehicle can be a failure in the hose or in the rear heater...
Question
Low coolant light came on.
Hi there. Check the coolant level sensor on the radiator and make sure that it's plugged in. If the radiator was replaced, there is a good possibility that the coolant level sensor could have been slightly plugged in and then...
Question
I just paid Dobb's $370 to replace an upper radiator hose. Was I taken advantage of?
I hesitate to pass judgement on other people's work and pricing because I wasn't there to learn the whole story. However, I can say that many BMW specialty shops are charging between 90 and 100 dollars an hour for labor,...
Question
Can I use Valvoline G-05 coolant in my radiator cooling system? 2014 Mitsubishi Triton
Hello - Valvoline G-05 is a low-phosphate coolant type developed for extended-life use in all-aluminum engines. It tends to be orange-pink in color. Officially, Mitsubishi also sells a long-life cool (called "Super Long-Life Coolant"), which has the same aim; good...
Question
Timing chain gasket is bad. I check the engine oil and found chocolate foam. Is it possible the gasket can leak coolant in engine? Fresh rebuild.
Hi there. If you check the engine oil and see the oil look like a milk shake, then the engine oil is mixed with coolant or water. Also if you are finding gasket material in the engine oil, then a...
Question
Fluid leak red and brown under the car, and once in a great while the engine will overheat.
Hi and thanks for contacting Your Mechanic. The leaks will not cause any damage to the vehicle it self, however, the part that it's leaking from will eventually begin to loose lubrication and come apart. The transmission oil leak will...
Question
Top radiator hose tight on 2004 dodge truck and loosing water that i dont see
Hi there. Look at all of the cooling hoses for the engine and the heater, radiator, core plugs (freeze plugs), and the engine oil. Look for any coolant leaking out of any port that could leak. Look around the core...
Question
Overheats at 120 C even after replacing thermostat and water pump.
If the hoses are cool, engine coolant is not flowing due to a blockage in passageways or hoses or inadequate water pump speed due to a loose drive belt. If you just added coolant after replacing the water pump and...
Question
Air con not working and my car overheating but everything fill up
The air conditioning and engine cooling systems are diagnosed separately. The cause of no A/C can be determined through a non functioning A/C diagnostic. Engine overheating typically occurs if the engine cooling thermostat has failed, the water pump, or drive...
Question
Overheating car no leaks
The cooling system, including the radiator pressure cap, should be pressure tested to determine if there is a leak. Leaks can be outwardly visible (external) as well as hidden (internal) in a circumstance for example where the cylinder head gasket(s)...
Question
Over heatin
When the engine is stone cold (for safety reasons), open the radiator cap and check the coolant level which should be right up to the top of the radiator filler neck. If the level is below the filler neck, add...
Question
The car through a serpentine belt
If the coolant leak still exists, the recommended service would be a leak diagnostic(https://www.yourmechanic.com/services/coolant-is-leaking-inspection). It is possible that a seized water pump bearing can throw the belt but all other causes, including bearing roughness in additional pulleys, have to be...
Question
Antifreeze problem
If you are having to periodically add antifreeze to the cooling system, there could be either an internal or external leak. That would include a "leak" through a faulty radiator pressure cap, which fault in the cap, if the fault...
Question
only heast when driving cold when idle. heating core flushed twice. heat control valve and blend door seem to be working
The normal operating temperature for most automobile engines, including yours of course, is in a range of 185 to 220 degrees Fahrenheit. If your dash gauge is reporting a temperature as low as 140 degrees F, that likely means the...
Question
Can I add water or fluid to the reservoir till I can get a flush and fill?
Yes, you can, and should, add coolant to the reservoir to make sure the engine cooling system does not run low. Add only a 50-50 (water-antifreeze ratio) coolant mix to the overflow tank, particularly if it is winter season. If...
Question
Coolant blows out of return jug overflow when driving 2004 Chevrolet Silverado 2500
Hi there - I would be concerned about a failing water pump. If it's boiling coolant out of the reservoir, that is pretty high pressure (and high temperature) coolant. Perhaps your temp gauge is not registering properly? Or the reservoir...
Question
Should a heater tube on the water pump produce coolant flow instantly when disconnected on a 1995 Dodge B2500
Hello. If the coolant level is where it should be then you should get some flow from the heater tube. It will not be a lot of flow, but there should be some. If there is none then you may...
Question
What temperature thermostat is needed for my vehicle?
Hi there. First locate the thermostat housing on your engine. Then get a drain pan and put it under the radiator and drain out the coolant. Once the coolant is out, you can remove the thermostat housing and replace the...

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