Yanmar 3ym3o dip stick

[jacaranda]

When I remove my dipstick it comes out clean but when I re insert and remove, it indicates what I believe to be the true oil level. All this carried out on stationary engine. Puzzeled? Any comments.

Brendan

[arsenelupiga]

i get this too on 1 engine. Contribute to air bubble play.

However, I get even more interesting one: Saildrive oil alternates between minimum level which is recommended and slightly above maximum.

After I check cold, and level is close to min level (optimal), go out, come back and before going out next time check again. Level is slightly above max. Oil clean. First time suspected water ingress. However,...

Then go out come back and again check before going out next time and level is again near min ( optimal) and clear.

And this alternates up and down...

HUH!

[model 10]

Originally Posted by jacaranda

When I remove my dipstick it comes out clean but when I re insert and remove, it indicates what I believe to be the true oil level. All this carried out on stationary engine. Puzzeled? Any comments.

Brendan

Some dip stick tubes are the same length as the dip stick. They are like that so you can pump out the sump through the tube. Your cars dip stick only goes through the block, not all the way to the bottom of the oil pan. When the dip stick is in such a small tube for it's whole length, you can have your weird problem.