Never had synthetic oil. And most of the miles mostly are in town, back and forth to work...before I retired. (Been retired now since 2003).


I know, it just doesn't fit the normal patterns at all. All I've really done to the engine is a valve job once, besides oil changes of course.


I did, however, rebuild another block when I retired. Preparing for the inevitable. The need for the new rebuild just hasn't come up yet!  The oil pressure is still great, no knocking on startup. It does use a bit of oil right now, but I have new valve seals and will change the seals when time and weather allow.

Years ago, I was getting around 30 highway.. its down to about 27 now.