The definition of feline is an animal that belongs to the cat family, or has the characteristics of a cat. An example of feline is a Siamese cat. An example of feline is a woman house burglar who is stealth and supple. A feline is defined as an animal that belongs to the cat family.
Mobil One and other oil manufacturers recommend checking engine oil levels before driving your vehicle, when the oil is still cold. However, some manufacturers will recommend checking the oil after you've warmed up the engine, so check your owner's manual to find the specific recommendations for your vehicle.
For the most accurate dipstick reading, check your oil level with the engine cold, and the car parked on level ground. (If the light comes on while driving, then you'll have to check it with the engine warm). If it is low, add one quart and look for leaks underneath the vehicle.