Been away for quite some time but recently got an VW Alltrack. Still an awesome site. Planned on using a 502 oil and calling it a day. I have used LC20 in the past but it's seemed to have fallen out of favor here. I get that oils are better now, especially those rated for this use but here's the thing. Some knowledgeable techs recommend a 5k oils change instead of the factory recommended 10k OCI. Not because the oil is done but to because the engine makes a lot of carbon that can wear the timing chain and tensioner. For those in the know, is this still the case? What do think about LC20 with a 10k change if TBN hols up? LC20 dissolving carbon in the oil to a nonabrasive size could just be the trick for this. Also, it would get mighty hot around the turbo. Shouldn't be a big issue for a LC20 mixed in the oil but could vaporize it more quickly with whatever comes with that.