Have a 2006 " 4 stroke 90hp " Johnson " ( made by Suzuki ) , just bought it . Check the oil after it sat for a week . Read the stick and it shows a little over a quart too much . Drain the quart ,check the stick, spot on . Take the maiden voyage yesterday, get back home , check the level a day later . Now it reads about a quart low . Tilted the engine up and moved it ,left-right so any pockets of oil would drain into the pan . Makes no sense to me , especially after reading it was a quart over . Reciept for oil change was in the paperwork ,showing the correct amount of oil they put in before it was sold to me . Any thoughts?