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Old 06-03-2003, 07:51 PM
Duke2.6 Duke2.6 is offline
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Join Date: Mar 2003
Location: Southern California
Posts: 2,010
The owner's manual says idle pressure as low as 0.3 bar is acceptable, but I've never seen mine lower than about 1.0 bar in very hot weather, and 1.5 bar at idle is normal in mild weather. These readings are with the engine at full operating temperature - at least ten to fifteen minutes of driving in mild weather. It takes some time after the coolant has reached operating temperature for the oil to reach full operating temperature.

Cold idle pressure will be higher depending on the SAE grade of oil in the sump and the ambient temperature.

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