It was $13,700 that was 40k miles ago buy the time it is registered and taxes it is more like $15K.
I use WVO in it. WMO is really nasty, grease is just a little nasty.

It was $1000 a year for insurance on a 1983 300 SD. I can not justify driving a car that old and having to fix it. My CDI has 193k miles and runs like a new car. Has great power, handles good, wicked brakes, easy to park, and 50 gallons of fuel capacity. Air blows cold and the radio works great.

I am pretty sure running motor oil is real close to the same idea as running WVO.