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SVTPerformance's Chain of Restaurants
The Greasy Spoon
Oil Pressure
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<blockquote data-quote="Jimmysidecarr" data-source="post: 12657318" data-attributes="member: 11681"><p>Some generic oil pressure recommendations:</p><p></p><p>Many motorsport enthusiasts and professional engine builders still think that thicker oil and higher oil pressure equal better protection, yet that is simply not the case. Better protection is best achieved through superior oil chemistry, which can result in higher film strength and better wear protection and this allows for safe optimization of oil viscosity and oil pressures to more efficient levels.</p><p></p><p>Thicker oil is however legitimately needed when the oil temperatures become extremely high on a regular basis(endurance or road racing or air cooled engines), or if you are experiencing high levels of fuel dilution, or if your internal crank shaft bearing clearances are modified and opened up significantly. </p><p></p><p><strong>Technically if you are running much more than 10 pounds of oil pressure per 1,000 RPM <span style="color: Red">(tested when the oil is as hot as it is likely to ever get)</span>, this will be essentially like throwing away and wasting valuable horsepower due to excessive pumping and parasitic loses. </strong></p><p></p><p>Running a “too thick” oil can also contribute to higher operating temperatures, since over all oil flow is reduced with a thicker oil. Reduced flow means less heat is able to be removed. </p><p></p><p><span style="font-size: 12px"><strong><span style="color: Red">When using a high quality, high film strength oil... ;-) , you only really need between 6 to 8 pounds of oil pressure per 1,000 RPM when the oil is at its hottest point.</span></strong></span></p><p></p><p>Without an accurate oil temp gauge, oil pressure comparisons with different viscosity oils are going to have questionable value.</p><p>This is because <em><u><strong>unless the different oils are tested at the same temperature </strong></u></em>the oil pressure test results will be almost worthless.:beer:</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 12657318, member: 11681"] Some generic oil pressure recommendations: Many motorsport enthusiasts and professional engine builders still think that thicker oil and higher oil pressure equal better protection, yet that is simply not the case. Better protection is best achieved through superior oil chemistry, which can result in higher film strength and better wear protection and this allows for safe optimization of oil viscosity and oil pressures to more efficient levels. Thicker oil is however legitimately needed when the oil temperatures become extremely high on a regular basis(endurance or road racing or air cooled engines), or if you are experiencing high levels of fuel dilution, or if your internal crank shaft bearing clearances are modified and opened up significantly. [B]Technically if you are running much more than 10 pounds of oil pressure per 1,000 RPM [COLOR="Red"](tested when the oil is as hot as it is likely to ever get)[/COLOR], this will be essentially like throwing away and wasting valuable horsepower due to excessive pumping and parasitic loses. [/B] Running a “too thick” oil can also contribute to higher operating temperatures, since over all oil flow is reduced with a thicker oil. Reduced flow means less heat is able to be removed. [size=3][B][COLOR="Red"]When using a high quality, high film strength oil... ;-) , you only really need between 6 to 8 pounds of oil pressure per 1,000 RPM when the oil is at its hottest point.[/COLOR][/B][/size] Without an accurate oil temp gauge, oil pressure comparisons with different viscosity oils are going to have questionable value. This is because [I][U][B]unless the different oils are tested at the same temperature [/B][/U][/I]the oil pressure test results will be almost worthless.:beer: [/QUOTE]
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