[T3] Oil Light...

[J. Jonik]

Re/  71 Sqbk FI Std with 72 engine----

The oil light on the dash....Is that just to indicate too low pressure, or over-heating, or both?

Maybe too hot oil reduces the pressure which then makes the light flicker?
Oil level is fine.

I have, amazingly, a virtually perfectly performing car.  Just did Philly to Connecticut and back (3-4 hrs each way) without a hint of performance trouble...97% highway.
   But, after a long trip, or just a trip across town on a 90 degree day, the oil light flickers.

It goes away while driving or with just a little rev.  Is this normal?   Should idle be turned up?  Something else?   Should idle be adjusted when it's REALLY hot?...i.e., beyond just "warmed up"?

Plus (related? Not?), there's what seems to be a valve rattle (like a rattlesnake) when not changing gears Exactly Right...revving a little.    Valves are set just right....at 5 whatever measurement.  What is rattling?   Why?
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