Re: How Often to Replace Canister Bypass Oil Filter
Posted by HH56 On 2017/3/28 18:57:48
I would say longer. The 46-7 Packard owners manual specified an oil change at 1000-2000 miles and called for the filter cartridge to be changed every 8000-10000 miles. That worked out to roughly every 5th oil change. Since we probably don't drive the cars as much to make the oil change routine using the 1000-2000 mile criteria but go more by time and as inexpensive as the filters are, you could do it more often -- maybe every other or even every third.
One thing you might do every change is to clean the mesh in the filler cap. That was Packards recommendation and since the engines rely on air flow thru the cap for proper crankcase ventilation anything that accumulates on the mesh between changes could restrict flow. Lack of proper crankcase ventilation was one of the contributing factors to sticking valves which was a persistent problem with the 356 engine and a lesser issue on the others.
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One thing you might do every change is to clean the mesh in the filler cap. That was Packards recommendation and since the engines rely on air flow thru the cap for proper crankcase ventilation anything that accumulates on the mesh between changes could restrict flow. Lack of proper crankcase ventilation was one of the contributing factors to sticking valves which was a persistent problem with the 356 engine and a lesser issue on the others.
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