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thstone · 01-15-2015, 11:55 AM

Its good reading, I have to admit.

In terms of "what does this mean to me?", the remaining question in my mind is how the oil pressure test results (in psi) relate to the actual pressures between components in a real engine?

For example; if the "pressure" in a bearing is only 50,000 psi then every oil tested will adequately meet the pressure required to avoid serious wear.

On the other hand, if engine friction surface "pressures" vary from 50K psi to 100K psi, then the data implies that using a different oil may preclude wear.

The author never tells us what the MINIMUM pressure is to preclude wear. Is higher better? Probably. But what pressure level is "good enough" versus "not good enough"?

01-15-2015, 11:55 AM	#2
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	Its good reading, I have to admit. In terms of "what does this mean to me?", the remaining question in my mind is how the oil pressure test results (in psi) relate to the actual pressures between components in a real engine? For example; if the "pressure" in a bearing is only 50,000 psi then every oil tested will adequately meet the pressure required to avoid serious wear. On the other hand, if engine friction surface "pressures" vary from 50K psi to 100K psi, then the data implies that using a different oil may preclude wear. The author never tells us what the MINIMUM pressure is to preclude wear. Is higher better? Probably. But what pressure level is "good enough" versus "not good enough"? __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor Last edited by thstone; 01-15-2015 at 12:03 PM.