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Old 07-09-2008, 05:04 AM   #25
mkiiisupra
Lexus & 550's
 
Join Date: Sep 2007
Location: Las Vegas, NV
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In addition you do not need oil additives if you buy good oil in the first place...

The supra is a low oil pressure vehicle and you can only increase that so much at a certain point (mentioned above) it kicks the oil back into the pan allowin less to flow into the engine.

Pressure is resistance to flow...a 20W-50's increase in pressure means that it does not flow as well through the bearings or to the top of the motor.

If you would take a moment and read through Motor Oil I think you will have a better understanding
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