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Old 02-19-2022, 02:17 PM   #5
equ
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Join Date: Aug 2005
Carmudgeonly Ride: 981S, 340i
Posts: 9,584
Quote:
Originally Posted by JST View Post
I would get into the habit of flushing it, yes, every couple of years. Same with brake fluid.

For top offs, I agree with FC; water is probably ok but I’d just do a 50/50 mix if it’s more than a little bit.
I do the brake flush every 2 (ok at worst 3) years. But coolant at the same frequency after my experience with losing an engine? Hopefully not. Maybe next year, we'll see. 10yrs/30k miles seem like nice round numbers. It's still on the original drive belt too, that should come up at some point. The only thing the car needed beyond oil, tires and brake fluid has been plugs & coils.

The car has a very nice visible coolant gauge that I check on every drive. I also know the different thermostat set point it goes to when 'sport' is pressed (S/C on 981/991). So far all look good during operation.
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