Oil analysis is a way to understand if there is something wrong with the oil in an engine or machinery.
Imagine your dad has a car, and he wants to make sure the oil in the car is working properly. He sends a sample of the oil in the car to a laboratory where the scientists look at it very carefully.
They use special tools to examine the oil sample and determine if there are tiny particles or chemicals in it that shouldn't be there. They can also check the levels of important chemicals in the oil, like how much metal is in the oil.
Based on this information, they can tell your dad if there are any problems with the car or if he needs to change the oil. This helps your dad to take care of his car and avoid bigger problems down the road.
Oil analysis is like a doctor's check-up for your dad's car—it helps him to make sure everything is working properly and catch any potential problems early.