Oil changes with rebuilt engine

[Hugh Barnes]

comparing the cost of *relatively* cheap multigrade and regular oil changes against the cost of a new engine, regular and often seems a no brainer. With the new engine in the Cabriolet last year, I did the first change after 20 miles, the second after 50 and then the third after 100. Never crossed my mind to be more frugal. And the oil changes seemed to be worthwhile in the way the oil came out of even clean as a whistle newly built engine...