Check coolant level hot or cold?

[Ford_lover38]

Hey All,

Just wondering should I check my engine coolant level when its hot or cold? I was just driving around and decided to check the level and saw that its on the "MIN" mark.

Should I top it up or shall I wait until the engine is cool then check the level again?

Thanks 

[kingsblue]

Cold, and don't undo the cap when engine is hot, the cooling system is pressurised.

[Ford_lover38]

1 hour ago, kingsblue said:

Cold, and don't undo the cap when engine is hot, the cooling system is pressurised.

Thanks mate - should I fill it to the max level or just in the middle between min and max?

[trailertrash]

 

3 hours ago, kingsblue said:

The cooling system is pressurised

...and when the system is pressurised it can give a false reading.

2 hours ago, Ford_lover38 said:

should I fill it to the max level or just in the middle between min and max?

Really?

[Ford_lover38]

1 minute ago, trailertrash said:

 

...and when the system is pressurised it can give a false reading.

Really?

Yep unfortunately really 🤔. I was always under the impression the closer to the max line the better but since then ive been told conflicting things.

[drsdriver]

Yes mate. Fill to the max line when it's cold only.

just make sure you have the correct grade of coolant thou for your vehicle. 

[Ford_lover38]

Thanks mate