After two powerboost oil changes, I believe that getting an accurate read on the motor's oil level is a matter of interpretation and divine inspiration. Watching the level on the dipstick as I slowly added oil after 5 quarts where it was just below the bottom hole, is an exercise in frustration. The oil is smeared all over the stick, perhaps due to the double-bumps/kinks in the factory dipstick, making it tough to really know the actual level. 5 1/2 quarts was close to the bottom hole, but after that, it's anyone's guess. If I didn't know that I had put in 6 quarts, I'd just be guessing how much oil is in the motor. If there's a dipstick-whisperer out there with more, better knowledge, I'd love to learn more. Thoughts?