[madmax300s]

I have a 2018 Chrysler 300s with 28,500 miles on the odo. The engine is Pentastar 3.6 V-6. I noticed that the coolant temp go up as high as 219 degrees (the outside temperature is around 75 degrees). Most of the time it stays at around 204-210 degrees while cruising on the highway.

I did some research and learned that the Pentastar engine block was sand-cast with aluminum. There might have some sand inside the coolant system because it is not flushed completely before the assembly of the engine at the factory. I was thinking, maybe there is some sand trapped in the radiator core, etc.

Should I take my car to the dealer for a coolant flush (and replace it with a new coolant)?? That might get rid of sand inside of the coolant system?? I don't have a proper tool to flush the coolant system, but I am sure that the dealership has that kind of tool.

What are your thoughts & opinions? Thanks

 

[CtCarl]

No.

There is nothing wrong with your car. Your thermostat doesn't start to open until 203º, and your high-speed cooling fan doesn't even come on until 226º or so.

What the stealership has is a special tool to flush the money from your wallet. All you need to do is to drain the radiator, and refill with a 50/50 mix of genuine Mopar purple OAT coolant and distilled water. If you do that every five years or so, it will help keep your cooling system in good shape.

 

[nfmstorm]

No.

There is nothing wrong with your car. Your thermostat doesn't start to open until 203º, and your high-speed cooling fan doesn't even come on until 226º or so.

What the stealership has is a special tool to flush the money from your wallet. All you need to do is to drain the radiator, and refill with a 50/50 mix of genuine Mopar purple OAT coolant and distilled water. If you do that every five years or so, it will help keep your cooling system in good shape.

 

[nfmstorm]

Amen to that