Re: OIL FILTER MYSTERY
Posted by 55PackardGuy On 2011/3/5 20:22:51
Quote:
Owen, the sludge in the bottom of the canister supports the idea of "settlement" being a major goal of the oil "filtering" system. As a portion of the oil goes through the canister, it increases volume and slows down long enough for some "settling" as well as a bit of filtering. I wouldn't be surprised if the goal of the filter is simply to minimize the amount of sludge that builds up at the bottom of the canister.
A plugged up mesh on a car without positive crankcase ventilation will obviously raise heck with crankcase pressures, in addition to introduction some dirt into the system.
The fact that Packard had full flow filters "back in the day" and changed to the partial flow design is one of at least two backward steps I believe they made over the years. The other is regressing from electric wipers back to vacuum.
Why did they do this? Cost? Did they think that oil bath air cleaners were going to keep the oil cleaner? Did they think it was going to stop raining hard?
Owen_Dyneto wrote:
I suspect the oil filler cap mesh is ignored much of the time and certainly leads to engine wear from ingested dirt.
PS - actually I take exception to the statement that the bypass filters are pretty much of a joke. Judging by the amount of sludge in the bottom of the canister, they certainly do perform some filtration.
Owen, the sludge in the bottom of the canister supports the idea of "settlement" being a major goal of the oil "filtering" system. As a portion of the oil goes through the canister, it increases volume and slows down long enough for some "settling" as well as a bit of filtering. I wouldn't be surprised if the goal of the filter is simply to minimize the amount of sludge that builds up at the bottom of the canister.
A plugged up mesh on a car without positive crankcase ventilation will obviously raise heck with crankcase pressures, in addition to introduction some dirt into the system.
The fact that Packard had full flow filters "back in the day" and changed to the partial flow design is one of at least two backward steps I believe they made over the years. The other is regressing from electric wipers back to vacuum.
Why did they do this? Cost? Did they think that oil bath air cleaners were going to keep the oil cleaner? Did they think it was going to stop raining hard?
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