You might explain why and oil change is done to the young-uns. And not at every 100,000 thousand miles.
Never mind an 8 year old. I had my car at a show and the parents and the 2 sons 14 and 16 went crazy over the 1960 sports car. I asked the kids if they would like to sit in the car, they both did, with the parents taking pictures.
When they got out the 16 year old said what is that as he was pointing. I said what is what, and he went over and touched the window crank.
Think about it. Here is a 16 year old kid that grew up with his parent car, and friends parents always having electric windows and door locks. I was shocked, and up untill that day never gave it a thought.