Pressure oil

Hello Alejandro, so by “piping” you mean your oil pressure gauge is a direct (wet) line system?  I agree it’s odd the pressure stays constantly in such a narrow range but if the gauge needle is moved directly by the oil and you’ve confirmed the gauge is accurate I would not worry about that. As far as filling your oil tank, are you pulling the propeller around and pushing all residual oil into the tank before changing the oil or checking the oil level in the tank?

I want to apologize, I use Google translator Spanish to English. My new engine from the factory has the new oil pressure sensor and I had to change my old oil pressure instrument to correspond with the new engine. I do not have any direct intake oil pressure instrument installed. Thanks for your reply

You’re welcome. I would suspect your oil pressure indicating system. That’s why I installed a direct-reading wet line and gauge in my 912UL. No worries about bad indicators, wiring or senders, or faulty grounds etc. it’s simple and reliable. So now back to your leaking oil. Where is the engine leaking?

I see that I can't explain myself. I will try it again. My engine was purchased new from the factory with serial number 9580935 , when hot and at any number of revolutions, the oil pressure is 3 to 4 bars. I cannot fill the oil tank to the maximum because of the tank breather. throw away the oil. I can only fill the oil tank leaving the level halfway between the minimum and maximum, if I put more oil it will drain through the breather. I do not observe any oil leak in the engine and oil radiator. Thanks for your reply

No worries, I understand your concerns. You measure the oil in your tank by rotating the propeller by hand until you hear the tank gurgle yes? And the end of your oil tank breather tube is Not exposed to the rush of outside air, yes? I would not be too concerned about the oil pressure as it’s within limits and a new Rotax engine. My engine serial number is close to yours I will note my oil pressure at different rpm’s when cold and hot and let you know what I have.