[new2subaru]

Originally Posted by suppjc

Thanks for the feedback people.

Maybe what I wrote earlier wasn't so detailed. I put in distilled water like 2 months ago, so no doubt that it's been all mixed up with the rest of coolant. Albeit small amount (~0.5L), my main concern was the increase in the freezing point of the coolant since I'm living in Alberta, Canada where it drops below -30C from time to time, which hasn't happened yet thankfully.

I don't have a hydrometer with me yet but will buy it at the end of the week and see if I can pull out some of the coolant to test out.

IN CASE I HAPPENED TO FIND THE FREEZING POINT IS HIGHER THAN WHAT I WANT, is there a third party undiluted antifreeze that I can mix to lower the freezing point? From everything I read from this forum and other websites, they all recommend the OEM coolant, which is right, but it protects as low as -37C, which seems like a borderline to me..


Again, thanks for the comments people!

In you case I would go to the dealership and get a flush and fill. It's cheap and can't hurt. I've lived in AB and -40C is no joke. You must use a block heater, no?