very interesting but doesn't help the Op much unless you can source a bypass filter suitable for an r1200gs.At Ratcliffe Power Station we ran our coal moving mobile plant with bypass filters. Before installation we changed the oil every week. Two huge Cummins needed 45 gallons.
With bypass filters we topped up the oil used every week changed the filters and had the oil tested. . It remained as good as new. Like most mechanics we chickened out at 10 weeks and dumped 45 (ok 40 - we'd not topped up) gallons of perfectly good oil.
Big operators can afford to test their oils. Those who don't know better just change it, because that's how it's done. It's a rule after all.
Bypass micro filters work and regular oil testing gives early warning of engine problems as well as confining the oil is ok.
Normal filters have pores 15 to 20 microns. The bypass are 0,2 microns. Every 10 runs through the engine all of that oil will have been micro filtered.
There is no metallic or carbon pm10 crap running around. It's a in the filters. They won't stop liquid contamination (fuel coolant water etc) but that's what oil testing is for.
Alan R
