My K100 has approximately 131,000 miles (210,000 km) on it. For the last 60,000 miles or so, I have used synthetic. The PO used synthetic as well, although I do not know for how many miles he used it.
My question; are there any downsides to using synthetic on an old touring K with high mileage like mine?
My question; are there any downsides to using synthetic on an old touring K with high mileage like mine?