35d: adding crankcase breather oil separator

[ZetaTre]

MEASURING EFFECTIVENESS

For a period of time, I actually drove around with a valve on the oil drain that I would regularly drain to collect the filtered oil [there's nothing coming out of that valve, it's just some odd light effect...]. I had it tucked it away behind one of the plastic covers.



I knew the system was working remarkably well when after 1,864 miles I collected this much oil.



MODIFY THE DIPSTICK TUBE TO ADD A RETURN LINE

This made the system maintenance free and allowed the oil to drain back to the sump.

I was able to find be the perfect tee to make a saddle on the oil dipstick guide to drain the oil: Shop Apollo 1-in x 1-in x 1/2-in Barb Fitting at Lowes.com



The tee is 1" x 1" x 1/2"

Using a jig saw I cut lenghtwise the 1" section; with some epoxy and some clamps to add strenght I attached it to the dipstick guide and once the epoxy cured I drilled through the 1/2" nipple to open the drain. Here's the final product:



What you see there along the rubber drain is a check valve that allows oil to drain but doesn't allow fumes to travel up the drain.



After noticing that the hose would tend to kink, I added a elbow for a better turn.