Here are two pics. The first is my
oil pan when the car is standing normally on my reasonably level garage floor. This is the condition under which I usually check my
oil, fill the sump, check how much is being used, etc. The second pic is when I have the back of the car jacked up so that the magnetic level on the bottom of the Canton pan has its bubble in the middle of the level's window (it's jacked up a good bit). Now, when Danbury Competition calibrated my dipstick when they built my engine it was on an engine stand, not when it was sitting in my ERA. Now you can't really see my dipstick all that well but it's directly behind my fancy coolant overflow catch bottle. The
oil level difference on the dipstick when you check the oil under the first photographed condition as opposed to the second is about 1/3 of a quart.
