Final answer:
To get an accurate oil service reading, check when the engine is cool and the vehicle is on level ground, typically in the morning before driving or after letting the engine rest. Use the dipstick method for a traditional check or refer to the electronic oil monitor if available in newer cars.
Step-by-step explanation:
An accurate oil service reading is essential for the proper maintenance of a vehicle. You can get an accurate reading by checking the oil level when the engine is cool and the car is parked on level ground. This usually means checking the oil first thing in the morning before the car has been driven, or at least several minutes after the engine has been turned off to allow the oil to settle.
To check the oil level, remove the dipstick, wipe it clean, re-insert it fully, and then pull it out again to see where the oil level lies on the stick. Make sure the oil is between the minimum and maximum marks. The color and clarity of the oil can also indicate when an oil change is necessary. Dark, dirty-looking oil suggests it's time for a service.
It's vital to refer to the vehicle's owner's manual for specific instructions since some newer vehicles use electronic oil monitors instead of traditional dipsticks. Such systems will provide a reading through the vehicle's dashboard display after the engine has run for a short period.