Bf 110 c ( 4 +7 )

[bolox]

#2- switch your fuel contents selector (mouse click below gauge) learn which gauge relates to which tank you select with fuel cock.

limits- easy way is to look at the dials- around outside of rpm and ata gauges are some markings: d= constant running, 30=30 min max, 1-2 =1-2 mins emergency settings. exceed these even slightly for more than a couple of secs and engine is likely to fail.
holding full boost for long is a good way to blow an engine

also try at a lower height(<5000m), things seem to get a bit tricky over 6000m