Liqui Moly settles as does any mos2 additive when the vehicle isn’t running as do all additive and fluids. It does circulate upon operation and Lubegaurd is also top notch. I use all three Lubgaurd, Liqui Moly and Motorkote at different times you’ll have people smarter than me talk on the merits and pitfalls of each, just like Redline, Royal purple and Amsoil. If it works for you amd quiet’s the tic, cleans the sludge and improve’s performance any and all of these have proven their worth.
To go off topic a little there’s also BG product’s that work also, their 44k, MOA and EPR, are widely used by dealership’s for cleaning sludge, engine performance and emissions. My favorite for intake/gas is Berryman’s products that clean the caramelization from having to run ethanol in your engine causing sludge build.