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playground:playground [2024/04/10 21:34] hippysmack [Testing Materials] |
playground:playground [2024/04/10 21:34] hippysmack [Testing Materials] |
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| ====== Testing Materials ====== | ====== Testing Materials ====== | ||
| - | All testing was performed at room temperature. However, at room temperature oil has relatively high viscosity so may not necessarily represent hot oil being pumped in an actual engine. To address this concern and simulate actual pumping of motor oil at operating temperature, a blend of WD-40 and 5W-20 motor was made. More specifically, Fleet Farm 5W-20 semi-synthetic oil containing ~ 30 wt% WD-40 was employed to provide a fluid having a room temperature viscosity of ~ 20 cP, which is the same viscosity as straight 50 weight motor oil at 100°C. The plot below shows a dilution curve of the subject fluids mixed in various proportions. ((chart provided by Kurt Melancon)) \\ | + | All testing was performed at room temperature. However, at room temperature oil has relatively high viscosity so may not necessarily represent hot oil being pumped in an actual engine. To address this concern and simulate actual pumping of motor oil at operating temperature, a blend of WD-40 and 5W-20 motor was made. More specifically, Fleet Farm 5W-20 semi-synthetic oil containing ~ 30 wt% WD-40 was employed to provide a fluid having a room temperature viscosity of ~ 20 cP, which is the same viscosity as straight 50 weight motor oil at 100°C. The plot below shows a dilution curve of the subject fluids mixed in various proportions. \\ |
| - | {{techtalk:ref:oil:1972_oil_pump_testing_-_oil_dilution_by_kurt_c_melancon.png?direct&600|}} \\ | + | {{techtalk:ref:oil:1972_oil_pump_testing_-_oil_dilution_by_kurt_c_melancon.png?direct&600|}} ((chart provided by Kurt Melancon)) \\ |
| The subject test fluid was used almost exclusively, but a few runs were conducted with conventional oil - straight Mystik JT8 15W-50 motor oil at room temperature - to compare results with those from the low viscosity 20 cP blend.\\ | The subject test fluid was used almost exclusively, but a few runs were conducted with conventional oil - straight Mystik JT8 15W-50 motor oil at room temperature - to compare results with those from the low viscosity 20 cP blend.\\ | ||
