Quote:
Originally Posted by LandyAndy
Great work men!!!
Ben,any idea how much oil vapour equates to oil returned???? I guess it depends on the health of the mojo!!!! Mine is quite a heavy breather but uses no oil at all.
When I get mine Im inclined to set it up to a catch can and discard contents caught.As part of your work I can record how much oil is lost.
Im thinking the vapourised stuff is best rejected from the engine and replaced with new oil.
What are your thoughts???
Happy to go this way and keep it that way unless oil loss is exsessive.
Andrew
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Hi Andy,
MANN+HUMMEL DO NOT reccommend fitting a catch can.
There is nothing at all wrong with the oil you lose through the breather, so it would be a waste to throw it away. It is generated by one of 3 mechanisms:
Evaporation-condensation (the smallest particles)
Shear (ring blow-by) - medium-sized particles
Crank-splashing - largest particles (droplets)
As your engine is set up now, the oil will become slightly more viscous between services, the recirculation that the provent will provide should reduce this effect.
How much mass you lose depends on the engine, but somewhere around 500mg/m3 (oil concentration in blow-by). I can't give you a mass per km or kwh off the top of my head.