GregBBRD

Virtually no one changed the coolant every two years on vehicles which sat in garages or warehouses.

"Low mileage" on a 25 year old vehicle is interchangeable with "coolant turned acidic sometime in the past". How bad the damage is can only be determined by removing the heads. I've carried many, many 928 blocks to the dumpster which had the cylinders eaten up by the acidic coolant.

SeanR

Hence the reason I advise potential new owners that it is much better to buy a car with higher miles and good records than a low mile with none.