| [GMCnet] Oil Pressure Poll [message #366640] |
Thu, 09 September 2021 11:03  |
Oliver Moore
Messages: 21
Registered: March 2018
Karma:
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Junior Member |
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I have never been able to find an SAE or other research study on the
lifespan of viscosity additives. I do have experience with marine diesels.
Quite often the recommendation is for a single weight oil. Unlike over-the
road-vehicles, a marine diesel is always under a high torque load. My
experience with motorsports when I raced professionally was again for
single weight oil. I realize that is not applicable to our GMCs because
the oil was changed after practice and the race. On the subject of oil,
does anyone know if our Olds engines need ZDDP?Just a few thoughts.
Oliver
1973 Glenbrook
Patterson Stage II
Thorley Headers
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