tdiman
Veteran Member
At what mileage do they recommend a coolant change ? Look in owners manual no mileage interval to be found.
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Until I had my head gasket issues, I was in a very similar boat.I think about 25 to 30% of the original coolant is still in my 2000 Jetta engine. I did a TB job on it back in July, added about a liter (50/50). It was at 371k miles
Mine changes itself real slowly. I keep adding more coolant.