Mopar Oil Filters Any Good?

Brian - I would NOT run that old of a filter. Filters typically have a sealer/glue in them be it on the end caps or the bypass or whatever. In my mind, that glue would deteriorate over time to where I wouldn't trust it. There are plenty of up-to-date filters you can go buy and run today. Why risk it as you have a gorgeous high-end car!

As for the bypass aspect of filters, for OEM designs, the bypass DOES typically open on cold starts. Cold, thick oil in the winter cannot be pushed through the media without some going through the bypass. Think if you get some water that freezes in the filter blocking some of the paper media. Again, this is one of many reasons the OEM's are designed to bypass. You have to account for far too many variable not to have a functioning bypass. Where trouble comes in is when an aftermarket company markets a filter for numerous applications. There is no guarantee that the bypass is designed the same as was designed by the OEM. So you may get more or less (bypass) depending on what it is. Hence my recommendation is to buy/use the OEM-spec'd orginal filter whenever possible. That being said, there is no such thing for our old LA and BBM engines anymore!