Jesus man with 186k I would be doing more frequent changes to keep it fresh and make sure no gunk accumulates. I do about 5-6k on oil

At your mileage your vanos seals might need looking into as well, but I would check the switch and make sure no gunk in the port for it when replacing first, cn90 knows his stuff I would listen to him!

__________________
2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards