2007 K1200GT oil burning question
I have what I believe to be a very simple question: Could an aftermarket exhaust (Remus) cause an oil burning condition in my K1200GT? For some background, I've been riding and wrenching on all types of motorcycles for over 40 years so I have a fair amount of experience in aftermarket exhausts and their effect on engines. I purchased the above bike used from a friend of mine with 3000 miles on it, still under factor warranty until October 2011. My GT has exhibited what I consider to be excess oil usage ever since. Burns a quart of dealer recommended synthetic every 2-3K miles, not terrible and more of a nusance on long trips.
Long story short, took a 4100 mile with two friends riding behind me most all the way( I'm the only one with a V-1 onboard). Both commented that after a long high speed run (80mph) with cruise control engaged, bike would send out a large cloud of blue smoke once cruise control was disengaged and throttle rolled off. This happened numerous times over a two week period. I did witness it a couple of times, and it was a huge cloud of smoke, not a wisp! Last week,I took my bike to my local dealer (as yet unnamed) for a 12K service and to report oil/smoke issue. After looking at my bike, the service manager, with a straight face, commented that my aftermarked exhaust (bought from this dealer) could cause the oil burning because, after all, it's only an air pump and you've now made it more efficient!!
Also consider two factors: bike burned oil before I installed Remus and was reported to dealer, and second, I clearly understand how to check and maintain the oil level on this bike. It was not overfilled. The service manager, again with a straight face, suggested I put the stock exhaust back on. I could only walk away and shake my head.
I've had a few BMWs going back to the '70s, and fully understand they are not perfect. However, if BMW is going to this extent to try and avoid a warranty claim, I'm just about through with them forever.. What do you guys think?