That's the point though. I asked for predictions haha. I'm not saying the engine is clean now. I'm saying "hey, bottom is end clean, think the top end will be better? Predict!"
I bought this 2015 charger SE (133k miles) 8 months ago and have done regular and proper oil changes since. Took valve covers off for routine maintenance to discover this sludge fest (Pics 1-3).
I did 2 full Seafoam flushes with new oil running half a can into my crankcase idling for 20...