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Just got my 2008 CGTS today - and I love it! Except for the fact that the coolant light came on. Question is this: can I just top off with water until I have a chance to get some? I don't have coolant at home. If I can top it off with water, how long do I have to get to the shop for a check - assuming no leak? Thanks for the info and sorry if it's a silly question :)

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Top it off with distilled water. A quart or less will not affect the mixture sufficiently to have any adverse effects on the temperature at which it will freeze.

Just keep an eye on the level, inspect the hoses and look under the car to try to determine the cause of coolant loss.

Regards, Maurice.

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As 1schoir said, just top it off with Distilled water, no problem. Most manufacturers go overboard on the Coolant to Water ratio anyways. 50/50 is fine for the Arctic Circle but 60~70 Water to 40~30 Coolant is better cooling for most climates. Water conducts heat better than Glycol, that is why most racing engines use almost purely water.

Edited by hahnmgh63
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Excellent - thanks for the responses! That's what I ended up doing. Took about 2.5L. Shouldn't be an issue, I don't think.

There was some air that escaped when I opened the cap, so I'm pretty sure it's all still sealed. Checked under the car yesterday as well because I had it inspected for registration and it was all bone dry.

Since I just got the car from shipment, I'm assuming the dealership just didn't check it before the sale. Funny it was low, since I asked the inspector to check all the fluids when I paid him to go there before I bought the car! :drive:

Anyway, thanks again for the responses - very helpful! :beer:

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