Hose vs Hyd tank cap
Heres photo comparison of the hyd tank vent cap and GHT or garden hose thread. Its apparent the hose is larger in diameter and more course threads. The difference is approx
.050 inches or nearly 1/16. In lieu of raising the cap, I'm thinking of adding a fine mesh screen maybe #20 or 30 mesh. That will allow air to pass but tend to condense oil and cause it to fall back. The OD of the sponge is 1.20 inches and the screen cut to close to that diameter will lay on top of the cap and held in place by the sponge and yellow lid. I'll use SS or Monel material.
Also attached is the tank with marks at full level 1.5 inches from top and level with all slides and jacks out. By keeping full level low (dipstick allows even lower) the breathing of oil is miniumized. I use very little oil makeup.