This is from a post by carl97ss: "The car had not run for 39 hours and it was 20 degrees F on Sunday morning. At cold start up, my car idles at 1050 rpm's. It took 38 seconds for oil to appear at the top of the pushrod were it meets the roller rocker. It took another 20 seconds (58 secs. after start up)for oil to work it's way to the tip of the roller rocker where it meets the valve stem. At the same time, 58 seconds after start up, oil appeared at the base of the valve spring where it sits on the cylinder head. By this time, the engine's idle had dropped to 900 rpm's. Oil started to appear on all the pushrods. rockers/springs within +- 3 to 5 seconds of each other. I suspect with a factory oil pump things might take a bit longer...." Now if this is true, how is an engine so quiet on startup? As far as I know, the loud tick-tick-tick noise some get on startup is because of a hydrodynamic film not being present. So my question is this...if a fluid film is not present for such a long time, how can an engine be so quiet on startup, with no noises but the smooth purr of the engine itself?