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ryanheacox · 11-27-2019, 12:59 PM

My gut tells me that the dirty black oil isn't specific to Rotella.

I would suggest changing the oil on your modern car at 500 miles and you'll probably find that the oil is also black and seemingly dirty. Oil gets dark very quickly after an oil change but that doesn't mean it's not doing its job.

Of course oil will get more dirty more quickly in an A given the lack of air and oil filters on most of them which is why the 500 mile change interval (though I think is too short with modern oils). With a new engine like you have I wouldn't worry much. Do you run an air filter? I can't remember.

11-27-2019, 12:59 PM	#2
ryanheacox Senior Member Join Date: Apr 2013 Location: Northwest CT Posts: 1,092	Re: Rotella T4 oil, dirty oil My gut tells me that the dirty black oil isn't specific to Rotella. I would suggest changing the oil on your modern car at 500 miles and you'll probably find that the oil is also black and seemingly dirty. Oil gets dark very quickly after an oil change but that doesn't mean it's not doing its job. Of course oil will get more dirty more quickly in an A given the lack of air and oil filters on most of them which is why the 500 mile change interval (though I think is too short with modern oils). With a new engine like you have I wouldn't worry much. Do you run an air filter? I can't remember.