<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Is it okay for me to leave a couple of quarts of oil out of a car engine I serviced?
<|assistant|>
It is not okay to leave out any oil, whether two quarts or two gallons. It is best to completely drain the old oil and refill the engine with new oil to avoid potential problems with the engine.