|
^^you are correct, but blow by from a DI motor is significantly higher. Fuel dilution on my MS6, with great compression, has dark brown oil in less than 2k miles. Fuel being injected at 1800psi vs a conventional port injection is going to behave differently in the combustion chamber. It's been covered at nauseum on Audi forums (they've been using DI for a decade now) and people had the same concerns. I had the same concern myself and I was no stranger to turning wrenches. Simple fact is, direct injection causes more blow by, and in turn more nasty crap in the crank case. All I'm saying is that a more frequent oil change regimen vs non-DI systems is advisable, as well as an OCC (oil catch can) and EGR delete. That will measurably reduce the engine contaminants and keep it running like the day you bought it.
|