Yeah and if you get a low oil pressure warning due to low oil level, I can pretty much guarantee that you ruined the engine for life. Oil pumps in most engines are at the near bottom of the oil pan. Assuming the pump works fine, getting low oil warning indicates the pumps is sucking in air. If there is so little oil left at the bottom of the engine that the oil pump is sucking in air, the top of the engine and probably even the crankshaft are spinning at least partially dry. Tigershark is already an engine prone to burning oil due to very narrow margin of error. If it is further wore down with in proper oiling, it will permanently burn even more oil. I wrote this here sometime ago, but to summarize that, I do believe tigershark 2.4 engine has an oil burning problem. But for many the engine would stop burning oil if they continued maintaining proper oil level. In my case it took close to 10k miles for oil consumption to stop, I have read some users even had longer periods. You can say the engine has a very long break-in period. But if you dont care and let the engine oil-starve, it will turn into a permanent issue. So some people do turn a temporary problem into a permanant one by being too stubborn.[MENTION=94981]At best, maybe a "low oil pressure" message but I've never seen it myself.
And yeah, low oil lights are very very rare. I have seen cars with low oil lights, but they are often unreliable and difficult to maintain. Engine oil is not an easy materiel to measure the level inside a metal box. It is designed to adhere to metal surfaces, so even after you turn off the engine, it will form a thin film over everything inside the engine. This makes getting a reliable reading difficult as you might have almost no oil left, bit the oil might still stick to the sensor and give a false reading. You can also only get a reading for an turned of engine, as a running engine has oil splashing everywhere. Cars that do have "reliable" oil sensors mostly have them inside what you might call a separate u-tube manometer that is in equilibrium with oil level inside the engine (by reliable I mean ones that can read oil for a powered engine). As the oil inside the u-tube manometer is not circulated (due to design it is an attachment outside of the loop), gunk, dirt, shaved metal etc. often builds up in the U-tube and clogs it. After that you will either get a false low oil reading or no low oil reading even if you have no oil, depending on if the oil is trapped around the sensor or cant get to the sensor. Cleaning (or replacing) it can be difficult as it involves accessing to something inside the engine block, or something on the engine block / oil pan if it is designed with ease of access in mind.