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Originally Posted By: Doug Hillary Hi, nuskool - You asked me this; "But now I want to ask how intake deposits can be affected by changing the oil too soon?" I cannot go any further on this matter except to say that this is one factor being researched by all of the parties concerned. My...

Originally Posted By: Gary Allan If/when I get a DI engine where this is a known side effect ..and if it's a "keeper" ..I'll be redesigning the vent system to make it so that those volatiles never get to the valves. Sorry for the side track hijack. Hijack welcome. A potential shortcoming...

Carbon build up on the intake valves is a known issue with the car. I hadn't thought of treating that as a complicating factor. Seafoam seems to be a popular DIY approach but I'll have to mull that over a bit more. As mentioned, warranty is not an issue. In fact, the car comes with included...

In the last couple of months this forum has probably taught me just enough to be dangerous, but I’m still not confident in answering this question: How does one decide an appropriate oil change interval? The car: 2010 Mini Cooper S (1.6 L turbo Direct injection) , 6 sp manual, driven daily, 40...