I'd also say that it's nothing to worry about. Some say the specific additive pack in oil, when exposed to high temps eventually causes the oil to change color. Others say it happens because it is actually doing some cleaning... maybe it's a bit of both.
I had an A4 a while back in which I started running M1 from about 5k miles (when the synthetic factory fill was dumped). It would always turn dark rather fast, even though technically there shouldn't be much cleaning to be done...
I ran M-1 0w40 in my 2002 Saab 9-3 (2.0L) for 5k mile OCIs. I stood there and watched them pour the new oil in and it was dark after 500 miles on the new oil. And it happened with every oil change.
Why such short OCIs on a normally aspirated engine?
"It's good to know all the marketing is working. "
My thoughts as well.
Don't worry about the color of the oil, that has little to do with anything.
And I would consider increasing your OCI's a bit, especially on M1.
looks like its getting cleaned...after u dump this oil out and do the next oil change with the same oil. im curious to see what the color is after 800 miles...stay tuned...
Keep it up brian. i hope u keep us updated.
I don't think it is the add pack getting dark. It must be cleaning a dirty engine. I used M1 for 11 years on my last car, and it stayed surprisingly light-colored compared to conventional oil I used on other cars, even up to my 7K miles OCI. Because I used M1 on a new car from 3K miles onward for 11 years, the engine never got dirty.