Quick release oil drain on front engine.

[Mark Hislop]

Richard:

I'm not sure exactly what you mean by the bypass filter. If I interpret your post correctly, what you are trying to do is to refilter your oil to keep it clean. I have installed this type of filtering system in industrial hydraulic systems before, and it does do a good job of keeping very small particles (under 10 microns) our of the system.

However, I'm not sure how valuable this system would be on aircraft engines. Hydraulic systems and engine lubrication are two different animals. I think that the critical items in engine oil, particularly on aircraft engines, is the lubricating quality and chemical composition. Aircraft engines, particularly those that are not flown often, build up acid content due to moisture condensation. Also, many of the polymer chains that provide lubrication qualities break down. This is why it is recommended that you change your oil every 50 hours or 6 months.

I think The combustion particles that the oil captures are of little detriment to engine lubrication or wear. I'm not sure if the extra filtering would accomplish much, since you would still have to (or at least should) change your oil.

On the other hand, I may have completely misunderstood the system you are talking about. Could you elaborate? Thanks.

Mark