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Table of Contents > Maintenance > Maintenance Under the Hood > Cooling System

2023 Honda CR-V Owner's Manual ➜ Cooling System

uuMaintenance Under the HooduCooling System  
Cooling System  
Specified coolant: Honda Long Life Antifreeze/Coolant Type 2  
3WARNING  
Removing the radiator cap while the  
engine is hot can cause the coolant to spray  
out, seriously scalding you.  
This coolant is premixed with 50% antifreeze and 50% water. Do not add any  
straight antifreeze or water.  
We recommend you check the engine coolant level every time you refuel. Check the  
reserve tank first. If it is completely empty, also check the coolant level in the  
radiator. Add the engine coolant accordingly.  
Always let the engine and radiator cool  
down before removing the radiator cap.  
Reserve Tank  
■
NOTICE  
1. Make sure the engine and radiator are  
cool.  
2. Check the amount of coolant in the reserve tank.  
u If the coolant level is below the MIN  
mark, add the specified coolant until it  
reaches the MAX mark.  
Genuine Honda engine coolant is a 50/50 mixture of  
antifreeze and water that can withstand freezing at  
temperatures as low as about -31°F (-35°C). If your  
vehicle is consistently subjected to temperatures below  
this, the concentration of antifreeze in the coolant  
should be increased. Consult a dealer for details.  
Reserve Tank  
MAX  
3. Inspect the cooling system for leaks.  
If Honda antifreeze/coolant is not available, you may use  
another major brand of non-silicate coolant as a  
temporary replacement. Check that it is a high quality  
coolant recommended for aluminum engines.  
MIN  
Continued use of any non-Honda coolant can result in  
corrosion, causing the cooling system to malfunction or  
fail. Have the cooling system flushed and refilled with  
Honda antifreeze/coolant as soon as possible.  
Do not add rust inhibitors or other additives to your  
vehicle's cooling system. They may not be compatible  
with the coolant or with the engine components.  
618  
 
uuMaintenance Under the HooduCooling System  
1Radiator  
Radiator  
■
NOTICE  
1. Make sure the engine and radiator are  
cool.  
2. Turn the radiator cap 1/8th turn counter-  
clockwise and relieve any pressure in the  
cooling system.  
Pour the fluid slowly and carefully so you do not spill  
any. Clean up any spills immediately; they can  
damage components in the engine compartment.  
3. Push down and turn the radiator cap  
counter-clockwise to remove it.  
4. The coolant level should be up to the base  
of the filler neck. Add coolant if it is low.  
5. Put the radiator cap back on, and tighten it  
fully.  
Radiator Cap  
619