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.
1 In very cold weather, it may be appropriate to drive the car around a bit first to get the oil loosened up and less viscous before checking it. Let the engine run for a few minutes, then let it cool down for five before you check it.  Many people disagree about whether or not the oil should be checked hot or cold.