I think that Chico has a by-pass oil filtration system.

Wally/Montana,

I think you have 1959 261, which would have a full-flow filtration system.

The bypass spin-on filter that you have would not be appropriate for Chico to use. Your by-pass spin-on filter, bypasses the filter if the filter clogs (if you a 1959 261 with a full flow oil filtration system).