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A guy at work gave me about a box PF25s from 1978. Are these safe to use? I'm concerned the adhesives and paper inside the filters would break down with oil pressure going through them since they are so old.
Are they worth anything to pace car owners, since they would be made around the same time they were?
I have about a dozen of these and have the same question. My view has been that I would use them for display and judging but would be cautious about using them full time for road trips. But than I've never had an "oil filter" analyst comment on them.
How many? It might be worth running one for a few hundred miles, then cutting it open to see if it had deteriorated in any way. If they were boxed up (and hopefully stored in a cool place) the gaskets and other rubber components are likely still fine.
Seems to me that if the parts were designed to deal with 200 to 250 degree oil, under pressure, for hundreds of hours, being stored in a dry cool place for a while shouldn't hurt anything.
I'd use 'em.
I think you guys are right, New oil filters are cheap. I would feel bad using them, they survived all these years. They're older then I am! I'll keep them as Display items in the garage.
How many? It might be worth running one for a few hundred miles, then cutting it open to see if it had deteriorated in any way. If they were boxed up (and hopefully stored in a cool place) the gaskets and other rubber components are likely still fine.
And if a piece breaks off at start up or during that few hundred miles and clogs an oil galley, then what?
That's like using a condom from the disco era because it was stored right.
Lets see...
We have the media itself. I've had NOS air filters disintegrate in the packaging.
The rubber portion of the anti drain valve. I've had never opened carb and trans kits from the 60s and 70s with gaskets and 0-rings that are rock hard and break apart when you touch them.
Many oil filters have cardboard end caps.
And pretty much any oil filter has an adhesive/glue that bonds the seam of the media together along with holding the media to the end caps. I wonder how well that glue holds up after 3½ DECADES?
Same reasons no one would use tires, brake hoses, suspension bushings, coolant hoses and belts made in 1978. They don't need expiration dates, it's just common sense.
Overall it still seems solid after 29 years or so. The media is difficult to tear apart, and the rubber pieces are still soft and pliable. I installed one of them on the Buick back in March and the car hasn't seemed to notice.
Were the factory filters blue or white? Would a blue PF-25 be any better for judging than a modern blue AC Delco oil filter? (I know they use a different number now)
I believe that the oil filter that came on the car from the factory did not have any painted lettering on it at all. If I recall correctly, it was just painted white. Not having the label painted saved the 'General' a penny or two for each car sold. And THAT is the level of concern GM had on cost for every part it produced.
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