Replacement radiator refill

SACFOX186

MEMBER
1999 CHRYSLER 300M
3.5L
V6
2WD
AUTOMATIC
165,000 MILES

I have ordered a radiator and now if I get it, how is it supposed to be refilled? By using the overflow? Running the car until it's low and then keep refilling the overflow until it no longer goes down?

Saturday, November 7th, 2020 AT 9:56 AM

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Basically yes. Once you install the new one, just fill the coolant so that it fills the bottle as the radiator does not have a fill cap. Then start the engine and let it warm up until the thermostat opens and it should pull a little more coolant in and then just top the coolant off. Here is a guide that will help as well:

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

Keep in mind there are transmission cooler as part of the radiator so you are going to have to top off the transmission fluid as well. Here is the replacement process from the manual and it talks about this.

Let us know if you have questions. Thanks

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