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Thanks for the quick reply Bob! And what about the differences on applications? I always knew that Red Rotunda filter is correct for late 64 and early 65' cars? What about this black one?
There was an NOS oil filter listed on EBay as item 323373059932 that was listed as an assembly line unit installed on ‘65 Mustangs. It’s a Rotunda piece that is black with yellow lettering. I have a “Shorty” oil filter I had understood was used on several early Mustangs. It’s also black with yellow lettering but says Fomoco rather than Rotunda. It says it’s to be changed after 1000 miles of use. Does anyone know which years and particular cars ended up with a longer black Rotunda filter and which might have got the shorty version? Attached is the shorty filter. Matt
Thanks Jeff. I did brows some of the assembly line section as you’d suggested. Some interesting photos have been posted. Among them there is one in particular of a Cleveland engine plant doing an oil pressure test on a ‘64 289 Hi-po for a Comet. Clearly has a black shorty filter. There were no other photos I could find showing other years of hi-po engines to see how far the shorty might have carried. Matt
I have not seen a Blue shorty so this was probably a pre 1966 thing?
Why would there need to be a blue filter? Were they not just painted with the engine?