Went cross country today to go icefishing, about 70 miles away. It took awhile to get there into about a 15k headwind. On the way back I was 50 KNOTS faster ground speed and it was a damn good thing that I was. Landing was bad enough.. with high winds not favouring the strip and taking everything I had to get her in, down and to the hangar. That's when I found that the 25 minutes I saved from the heavy tailwind saved my ass! Pictures don't do it justice... but I did have 3 quarts left. Had 7 when I left this morning.
Lesson learned for me and maybe others. I noticed a very light sheen of oil on the case by the oil filler tube yesterday. I wiped it down.. looked for cause.. tighted a return oil line clamp and checked the security of the filler tube considering a very recent thread on that. Couldn't see anything else suspect and I even had a good light in there.
Pulling her in the hangar this afternoon.. oil pouring out of the lower cowl door onto the ground. Belly coated from tip to tail.. wishbone covered in oil.
The oil pressure line was cracked at the nut... I just touched it and it fell apart. I was showing 78psi all the way home but it wouldn't have been for much longer by the looks of things!
..and YES that will be the last compression fitting used on my airplane! (it did last 16.5 years though)