I've struggled (and mostly given up...I check my own car my way) to explain to my Dad that, no, dipsticks don't become less accurate with age. The convo wen't a bit like this:
Me: I'm going to add oil to my car
Him: Ok
*watches because he's coming along with me somewhere*
Him: you know, you should probably add more
Me: The level is within at the top of the range, it's fine
Him: You should really add more oil, the cars old, that reading could be inaccurate
Me: Ok fine *pretends to add more oil while he gets in the car, while thinking:*
One can guess where I
didn't get my limited knowledge of car mechanicals from. :lol: