I quit using Mannol as my cars which are both high mileage burn it. Once I switched back to a better oil it stopped happening. Mannol has also been caught listing ingredients that aren't present and dot 4 brake fluid that isn't to spec from what I understand.
Blueprint isn't great, the oil filters are very average. I've got one of their clutches fitted, it's a juddering mess. Mahle and Hengst filters for me.