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Did an Oil change today with about 7k on the clock, switched over to Mobile 1 5W-30. the previous oil was still good and only had about 2k miles on it. Looking online the LT4 seems to have either Fuel pressure regulator issues or gas blow-by. How many of you have dealt with this same issue? how have you corrected the issue?
 

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You're going to get more blow by in a boosted engine then a NA engine. Also I have never had a DI engine, but that may play a part also someone else will have to comment on that part. And there is no regulator in the system.
 
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