Normally it will last the life of the engine. However if the engine overheats the gasket can be ruined immediately.
Oil on engine burning as engine overheats. Sort of common sense, don't ya think?
The life of the engine unless the engine overheats.
Your question is not clear...
My 2001 Nissan frontier 3.3 v6 engine is overheating. I changed the thermostat but it still overheats.
There is no way of saying for sure. As long as the engine never overheats and you change the coolant every 50,000 miles it should last the life of the engine.
Ruin it if it overheats with no lubricantProbably seize
You can blow a head gasket or the head can crack or be warped.
Hard driving can cause an engine to use oil, but not drastically. Coolant level should not be effected unless the engine overheats.
If an engine overheats the metal parts expand and the engine will seize up. A seized engine is usually unrepairable.
Anytime the engine overheats you have the possibility of blowing the head gasket.
Until it overheats, runs out of oil or gas, or has a mechanical failure.