quote:I'm going to try a 10K oci with a filter change when I add oil. (Burn a qt @6k)
AAHHH...the truth comes out once again! You burn oil,and have sludge/varnish issues(You admit to using A-RX).............GOTCHA !!!!!
So, let's sum up your "STELLAR" results with this..........the so called "MFG APPROVED OIL" you're using and swear by.... is really working out well I see.......engine is burning the stuff,and the oil also sludge/varnishes up the engine. All those 'expensive' oil changes with your "Approved oil",and all the flushes,rinses,chemicals,TCW3 in the fuel(don't tell BMW/EPA),etc,etc,............SOUNDS LIKE YOU HAVE PROVEN MY POINT QUITE WELL-conventional wisdom/techniques don't work so well...do they!
The above issues Trajan is dealing with,is the reason why I use Synlube.
I have zero sludge,zero varnish,(zero oil burning/loss/evaporation),no chemicals or flushes ever needed,and No worries!