I don't have any tick thankfully, but man that cold start piston slap sounds nasty. Goes away in 3-4 seconds tops, but I hate it every time. Hey
@Burla, does lubegard biotech help fix this or is that just for the tick?
Well, technically there isnt a real fix for this, the pistons shrink from cold at a rate higher then the block, all metal recedes in the cold. Lubegard is a moly additive obviously, and the problem is the piston is cocked in the bore at only this one time and it isn't something moly can correctly plate, because you need constant perpendicular pressure for EP additives to work well, so just maybe it would but I wouldn't guess it would.
We have had 0w30 work to alleviate a lot of cold piston slap, mind you guys that had that work were running 5w30 and up as their oil, if you were running 5w20 already I wouldn't think 0w30 would work, but just maybe 0w20 would work. So it makes sense thin oil would help and has proven to do so by some forum members, but you are dealing with a real proven hard to beat condition in the case of piston slap, maybe the best defense is an engine warmer, even a sump heater for the oil.