Oil temperature and other things that might kill your engine.

[Viper2000]

120ºC coolant temperature = engine failure.

The cruising temperature should be 95ºC.

3000 rpm is fine for combat.

At +6¼ psi boost you need at least 2080 rpm to avoid detonation. This is important with 2 position props. You can't just change to coarse pitch at full throttle, because you're likely to go below the minimum rpm for your boost and break something. Therefore with a 2 position prop I throttle back to 0 boost before switching to coarse pitch.

Oil temperature should be 90ºC for cruising and 95ºC max.