well the engine is on a 16lb fw190, so sts warbird flying, fast low passes, full throttle claim outs into loops and rolls, slit S's - usual warbird stuff.
the engine is used maybe 5 flights on a flying day, and thats once or twice a week, all year round, so hot weather and cold winter whehter, with the mixture adjusted accordingly.
The engine has been runnnig on Optifuel 20%mv 4S, which has 20% oil of 275 centistrokes.

Simon