Re: Bypass vs. full flow oil filters

Posted by su8overdrive On 2012/6/6 1:34:18

Thank you, Dr. Cole. All excellent points, and the experience of the auld gent with the 384-ci Model 902 with
the outsized paper air filter is new to me. I've been running a Wicks 87055 in my '47 Super's oil bath cleaner since the late '90s which fits like a glove.

When i changed my oil and filter last New Year's Eve afternoon after only 985 miles since the previous change simply because of the time, not mileage, that had passed, it looked about as clean as it did at 100 miles. As mentioned, i never, ever start the engine unless i'll be driving 18-20 miles highway to equalize block, head, manifold temperatures and prevent sludge, varnish, carbonic acid as mentioned above.

A Cordite friend installed a full flow oil filter on one of his Cords, something a few 1936-37 Cord owners have done probably since the three-main-bearing Lycoming V-8, same bore/stroke as Packard's 1948-54 inline 288, shares oil with the transmission, Cords being, as we've read and heard, underfunded, underengineered.

We already know how cheesy even the upper echelon GMobiles were compared with concurrent Packards, but it's
interesting that the 1936-48 Cadillac three-main-bearing 346-ci (320-ci in '36) L-head V-8 using the same Wilcox-Rich hydraulic valve lifters as the 1940-50 Packard nine-main 356 L-head inline 8 offered an oil filter as an option, while it was standard equipment on the Packard 356.

Already have a pre-oiler on my car for full oil pressure
before turning the starter, since according to McDonnell-Douglas, Continental, the SAE 80-90% of all engine wear occurs during the first moments of start up after an engine's been sitting more than a few days, or a week, let alone a month or more.

So, short of drilling and tapping our blocks for full flow, i'm sure many of us would like to preserve our Packards "for the duration," and are all ears when it comes
to such insight as yours above. Thanks again, sir.