Thank you for the input Jackd and savageT. Yes, oil degrades and compared to the cost of our engines change it hot, and often........has somebody said that b4??......oil is not immortal, bypass is for solid contaminant removal (1 micron??) not for hyperextending oil life effectiveness as Jackd pointed out (additive depletion, oxidation and others......). I was only questioning the physics (read merit) of the BMK13 setup since the BMK11 (with outlet return to basically atmospheric pressure/crankcase pressure) set up is the classic way to bypass by virtue of its higher working pressure and flow. Thanks again. Later.
91 300E 190K
81 911SC 210K
61 MB 190C 90K - sold...sigh.
70 914-6 - DUI victim - sigh
911T - Fire victim
Renault Dauphine '62
67/Cougar GT;70 Challenger 440 Mag
www.wetstart.com - OEM future option coming soon