1HZ oil pressure video (2 Viewers)

[tmarx]

Ok, thanx Greg.

 

[Ron R]

After reading this thread I have noticed that when cold @ idling the gauge indicates slightly above half on the scale but still rises to about the same level when driving or maybe a little less than three quarter on the scale.When normal operating temps are reached she goes back to normal.Is this due to the cold oil not having reached its optimum viscosity or should I be concerned?

What happens is that when the engine is cold - and therefore the oil is cold - at idling the pressure is higher then warm.
See it as a matter of the oil not being able to flow through the oil galleries and lines as easy as when warm and 'thinner'
At idling the oilpump is delivering at it's full capacity for that RPM.
When rev's go up, at a certain pressure, the pressure regulator kicks in at a certain value. This happens because the oilpump now is able to deliver a higher pressure at a higher flowrate.
Because of this valve, the pressure will be restricted to the same value, either cold or warm.
(If you would look at a very precise pressure indicator you would find a very small difference but that's hardly noticable on your OEM-indicator)
So no, what you see is quite normal. You should get worried when you don't see this behaviour anymore

 

[tmarx]

Thanx Ron, makes sense