This is why I put in much smaller doses, almost every oil change (~100-150ml), instead of 2 full cans (600ml). I find it helps the tick, and provides a slight enhancement to lubrication (engine quieter overall). After a 2-3 changes, I run a cycle (5,000mi) with no Ceratec, to cleanse and flush out some of the excess.
I also prefill the filter at oil changes. My Dad was a lifelong mechanic and he taught me that way. The idea of an oil additive that doesn't let the surface starve for protection makes sense to me. Engine startup is one time that an engine rotates momentarily without oil pressure, however short of a time that may be. Thinking out loud here... if someone changes oil on a hot engine that still has much of the thermal expansion in place from running, tolerances at their smallest. Is there value in changing oil with the engine cold instead? I've done a ton of oil changes in my life and never really considered it.
That PTFE Slick 50 is ridiculous. I have an old pump bottle of it that was sold as a household lubricant. I can put it on something and forget about it for years.
