Originally posted by emosun
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I do have a similar issue to what you are describing on our Saab, but with that car the oil is poured down the same tube that the dipstick occupies (a relatively large diameter tube). After pouring in new oil the sides of the tube can be covered in enough oil that some rubs onto the dipstick and makes getting a clear level reading more difficult, unless you wait a little longer than with most other cars (I have the same trouble with the Briggs engine in my ride-on mower). It doesn't create a problem when just checking the level.
I am wondering why you are getting a significant amount of oil travelling up the tube. An explanation may be that crankcase pressure is high (due to excessive blow-by gas and / or blocked crankcase breathing system) and some pressurised gas may be escaping through the dip stick tube, possibly carrying some oil at least part way up the tube as it does so. Do you ever find that the dip-stick isn't quite seated at the top of the tube? If so then this might be because the pressure is pushing the dip-stick up until the dip-stick seal is no longer sealing the crankcase...
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