Having problems with your Chevrolet Monte Carlo ?

I want to drain my radiator and replace the coolant. It's a 2003 with 47,000 and 8 yrs. old. I've been wanting to do it for a while but never got around to it and now I need to before this summer. Is there a drain plug on the bottom of the radiator? and what side is it on? You cant see anything from the top looking down, so I'm thinking I might have to remove that air deflector on the bottom. Once I get it drained, when I put the new stuff in, do I half to dilute it 50/50 with water? or just

Posted / edited by AnonymousUser on : 17-01-2022

Answers :

If you disconnect the lower hose at the radiator, it's faster and easier than finding the drain plug (half either snap off or don't work anyway). Best to do that with the engine cold.
You can either buy pre-mix or straight coolant and dilute it yourself. Generally it's cheaper to do that.
When adding, don't forget that there is still quite a bit that stays inside the engine block. You can buy an inexpensive hydrometer at any parts store (usually around $5.00 or so) and use that to check the actual concentration in the system. Don't forget...too much antifreeze can cause it to boil over so stay as close as possible to 50/50.
When re-filling, do that with the engine running and the heater on high to prevent any air locks in the system. Let it run for at least twenty minutes with the cap off so the thermostat can open and you can monitor the level.
Repair Help & Product Troubleshooting for Chevrolet Monte Carlo

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