When I change the oil in my car do I have to put oil in here in this second section also, as well as obviously in the main area on the other side where oil always goes, and if so how much oil do i need to put in there?

 

That has coolant in it 😂

Really so coolant does not only go in here it goes in there as well, so I I flush the coolant, I need to refill that part show in 1st pictures as well as the main coolant tank show here

 

 

Fill radiator first and then fill coolant tank in picture 1 and then top up expansion tank to MAX line.

nice one, thanks for clearing that one up

Great. If you are going to flush the system, read threads on here about burping cooling system to get all the air out.

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