Could be a spark plug, ignition coil, injector or low compression.
Valvoline restore and protect is all that you can do. Best motor oil out there.
VALVOLINE RESTORE AND PROTECT AND SHORTEN OIL CHANGE INTERVAL! It will fix it!
Looking over this old post -- an update: I have since migrated to M1 ESPx2 in 0-20. The price has stabilized at $25gallon, and that made all the difference in the world to me, and is allowing me to reduce my OCI's to 5kish.
Run valveoline restore and protect for 3000 miles. Add engine oil flush before eat oil change according to their instructions repeat 4 times or more. After that continue to run valvoline restore and protect until the engine dies
Edit: dies from old age at 500k miles
I use mobil one ESP 5-30
Mine has had Mobil 1 Extended Performance 0w20 its entire life (aside from the factory fill) and I've had exactly zero oil consumption or lubrication related issues. It still gets nearly the same fuel economy and is as responsive and smooth as when I bought it, no matter if it's blasting up a steep mountain or baking in the heat of summer traffic.
Every 4k-4500 miles with a Mobil 1 5w30-5w40 mix and some liquimoly oil treatment.
Pretty pricy imo, used it once then when I consulted with friends/a family member I’ve decided to switch to Mobile 5W-40, as this helps with the temps in my area living in a desert lol.
I used that once years ago in my 2011 Limited on Stage 2. What a waste of money.
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