Let me try this another way. "based on the positive experiences I've had with BG products, using the MOA might be worth a try. I've not personally tried their MOA but swear by thier 44K fuel tank/system cleaners". Consming a quart every 500 miles of oil might sound excessive but not something I'd personnally fret over so long as the engine is tight and not burning it to excess. As a side note and a little off the topic of excess consumption, I think salmon as noted on page one don't consume much oil as they're full of it and the triple 7 is one fine airplane. Ciao Chris