Kioti DK 55 2008 diesel tractor

[Tricky01]

Oil pressure light flickers when idling and sprays Oil out overflow tube under oil filter when driving

 

[ptsg]

What does the dipstick say? That would be the first thing I would do.

 

[oldnslo]

Like ptsg states. Check oil level, oil color, smell etc.
Foaming can be from being over full which can be caused by bad seal on hydraulic pump on some models, leaking diesel lift pump on some models, antifreeze - coolant leak into oil.

Pulling dipstick is first step in trying to identify possible cause.