Originally Posted By: geeman789
And what is the efficiency rating when the filter is in by-pass mode... which it is every time you start a cold engine, or get up in the revs...? Don't kid yourself, your filter runs in bypass mode to some degree FREQUENTLY.
Not true according to member Jim Allen on-board testing and data collection. Filers bypass way less than you think. Sure if you fire up an engine at zero degrees F and hammer the throttle it's gonna go into bypass, but if you keep the revs down until the oil gets hot it probably will rarely go into bypass.
And once the oil is at full operating temperature, the delta-p across the filter is usually way below the bypass valve setting - even if you were driving around all day long at red line. Here's an example of that.
Link: PureOne Flow vs PSID Data
And what is the efficiency rating when the filter is in by-pass mode... which it is every time you start a cold engine, or get up in the revs...? Don't kid yourself, your filter runs in bypass mode to some degree FREQUENTLY.
Not true according to member Jim Allen on-board testing and data collection. Filers bypass way less than you think. Sure if you fire up an engine at zero degrees F and hammer the throttle it's gonna go into bypass, but if you keep the revs down until the oil gets hot it probably will rarely go into bypass.
And once the oil is at full operating temperature, the delta-p across the filter is usually way below the bypass valve setting - even if you were driving around all day long at red line. Here's an example of that.
Link: PureOne Flow vs PSID Data