[Digger84]

Both sides should be at full level once full

if one side is higher it is a false reading on that side as top of oil in pan has to be level just like any standing pool of liquid

 

[Digger84]

Do the math the dipstick front reading side to back reading side is less than 1/4”
Now multiply that by sin of a generous 30 degree overestimate from how far you are off vertical and your concern that that angle makes a difference falls apart

or if you still have doubts take a pan of liquid (even dirty oil) and submerge dipstick tip at your estimated angle and compare level on sides once removed

 

[Digger84]

I did the math. Sine is not used for this problem, and the angle of the dipstick measures 40 degrees from vertical. The relevant parameters are the angle of the dipstick = 40 degrees, the thickness of the dipstick = .115", the area of the upper oil pan = approximately 16" length X 9" width, tangent and cosine of the dipstick angle. The pan is not exactly rectangular, but this is a pretty good approximation.

At a 40 degree angle with a .115" thick dipstick, there will be a difference of .096" on the dipstick between the upper and lower side level. This would result in an oil level height difference of .074" in the 16" X 9" pan, which equals an oil volume difference of 10.7 cubic inches or .19 quarts. This is hardly a trivial volume of oil, and certainly could be enough extra to cause oil to be blown through the PCV system after an oil change.

The question still stands as to what side of the dipstick reads the correct level, but our best assumption may be that the manufacturer intends for the reading to be taken off the side with the crosshatching. The side with the crosshatching always points downward due to how the dipstick is inserted into the tube, so filling until the side without the crosshatching is at the maximum level would result in overfilling by .19 quarts as I showed. This could result in oil being blown into the intake manifold which is a common complaint.
View attachment 4570308

View attachment 4570309

So you calculate that one side is less than 1/10 of an inch different than other side
Compare to original
Dipstick pictures and like I said that was NOT the cause for the difference in levels on the two sides he pictures no matter how hard you manipulate it
The angle of the dipstick makes no significant (less than .1” difference on two sides and to get that small difference you assumed the dip stick was rotated to exact position to place the two sides on highest an lowest side of slope when probability is against that specific rotation

again a insignificant problem with a falsely proposed etiology
No matter how much you wish it could explain the op pictures

 

[Digger84]

Sure whatever you want to believe

 

[Digger84]

Rotate dipstick 90 degrees on long axis should zero out and difference

but. Ice to know you prefer the straighter Block entry of the dipstick tube on the minivan and journey 3.6 engine

plus they use a flat blade dipstick no cable and special added tip

 

[Digger84]

Pressure of crankcase from piston moving down fuels a two stroke