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[GMCnet] Oldsmobile Engine Oil Flow [message #115100] Tue, 15 February 2011 14:13 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
Senior Member
G'day,

I thought I'd break this out of Dan's engine problem and create a new thread
to discuss this to make it easy to find.

Reference: MM X-7525 Page 6A-2 ENGINE LUBRICATION SYSTEM Figure 1 - Engine
Lubrication and Figure 2 - Oil Lines to Cooler.

"Oil enters the pump through a screened inlet located near the bottom rear
of the oil pan. The pressurized oil from the pump passes through the engine
oil cooler located in the radiator tank then to the oil filter located on
the right side of the engine block, see Figure 2. The oil filter base has a
by-pass valve which in the event of filter restriction will open at 5.3 to
6.3 psi. It then enters the right oil gallery where it is distributed to the
five main bearings."

There are subsequent paragraphs that describe the oil flow all the way back
to the oil pan.

I do not contest the fact that cleaning the lines to and from the oil cooler
in the radiator as well as the cooler itself to get any debris from a blown
engine out is MOST important, however, I can't understand how any
contamination remaining can get into the engine unless the pressure
differential across the filter by-pass reaches 5.3 to 6.3 psi.

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
 
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