I have a pair of Volvo 63's that I have a minor irritation with. When I check the oil, the level on the dipstick is usually down to the "add" mark. I then wipe it off again and recheck. The level is on a different location on the stick. I can check the level 5 times and the level will be at 5 different locations. I will wipe it off, insert, count to 3, pull it out halfway, reinsert then check. Same thing. different levels. I then just take an average. Kinda bugs me to do it this way. Anybody have a method that works?