long story short -- older engine, when cold, the hydraulic lifters make noises for the first 30 seconds when completely cold (like cold outside cold)
likely do to wear, sticky gumbed up lifters or not enough oil pressure...
I doubt its the oil pressure, cause its proper weight synthetic
wear... sure, which is why they're hydraulic lifters which save on having to do tapit/lash jobs
So what crankcase additive method has worked for you?
I've heard - a bottle of ATF for a couple hrs
I've heard - A can of seafom in the crankcase for a while
I've heard - Engine restorer or Wynn's engine restorer?
I've heard - replace a quart of oil with Lucas treatment
I've been running synthetic, mostly whatever's cheapest but mostly pennsoil...
(kinda milking off the whole engine flush thread, but not really)
or are we really all ballers who never drive cars that have more than 30k on them