PF-25 Oil Filter Revelation

[Kenneth B.]

Re: PF-25 Oil Filter Revelation

THANKS JOE & TERRY
It's kind of neat that we are still finding out things about 40+ year old Corvettes & are always updating the manuals.

[Joseph K.]

Re: PF-25 Oil Filter Revelation

Just found this on Ebay. It black lettering, red AC logo, and AC embossed on the the bottom????? Also found that a Red and blue lettering with embossed bottom as sown in the JM went for a winning bid of $162, rare find but very expensive. I bet is the winner read this thread he would not be happy. http://www.ebay.com/itm/PF-25-NOS-wh...955aea&vxp=mtr

[Dave S.]

Re: PF-25 Oil Filter Revelation

Just found this on Ebay. It black lettering, red AC logo, and AC embossed on the the bottom????? Also found that a Red and blue lettering with embossed bottom as sown in the JM went for a winning bid of $162, rare find but very expensive. I bet is the winner read this thread he would not be happy. http://www.ebay.com/itm/PF-25-NOS-wh...955aea&vxp=mtr

Joseph,
The filter you refer to is not the same as the so called "embossed" PF-25 that would be correct for 69/70 Corvettes. the correct filter has embossing around the circumference of the bottom the reads "BEST WAT TO PROTECT YOUR ENGINE...........etc. and lacks the raised AC logo. The wording on your example is also upside down from the correct filters. My opinion is that is a Canadian version of the PF-25 sold in Canada as a service replacement.
The person who buys this filter will experience disappointment on the judging field.

[Mark D.]

Re: PF-25 Oil Filter Revelation

I am not sure i want to comment on that remark Paul.

[Paul O.]

Re: PF-25 Oil Filter Revelation

Mark

If I recall from the past when this photo was posted Ron and I were discussing the amount of brain cells it takes to fly a B737 or was it another appendage of a pilot?


Paul 18046

[Ron G.]

Re: PF-25 Oil Filter Revelation

I have never seen the black/white filters, but someone in the past did mention that they thought they were black/white. However, I at the time believed they did not exist, but I am wrong, and Paul in going forward please no more side or back of the head shots.

[Mark D.]

Re: PF-25 Oil Filter Revelation

Mark

If I recall from the past when this photo was posted Ron and I were discussing the amount of brain cells it takes to fly a B737 or was it another appendage of a pilot?


Paul 18046

Yes and yes...

[Wayne G.]

Re: PF-25 Oil Filter Revelation

I still think its an assembly line fact and if you could find a 69/70 Corvette with 1,100 miles I bet it would have the same filter as the '69 Camaro. As I mentioned before GM had to have had thousands of those filters ready for there assembly plants. So if that is the case the JM might have to be updated. All you need is that 1,100 mile Corvette as proof.

[Terry M.]

Re: PF-25 Oil Filter Revelation

I still think its an assembly line fact and if you could find a 69/70 Corvette with 1,100 miles I bet it would have the same filter as the '69 Camaro. As I mentioned before GM had to have had thousands of those filters ready for there assembly plants. So if that is the case the JM might have to be updated. All you need is that 1,100 mile Corvette as proof.

We (and I mean several of the posters in this thread) have seen a 1972 with 4 miles showing on the odometer and another one with less than 300 miles showing. Both had oil & filter changes. As I said we were all good Boy Scouts.

[Joe L.]

Re: PF-25 Oil Filter Revelation

We (and I mean several of the posters in this thread) have seen a 1972 with 4 miles showing on the odometer and another one with less than 300 miles showing. Both had oil & filter changes. As I said we were all good Boy Scouts.

Terry and Wayne------

That's the problem. Even with low mile cars, the oil filter has almost always been changed. Folks just never thought it would have any importance and they probably figured the replacements would be the same, anyway.

I might even have questioned the originality of the Camaro in the link that Terry provided. However, I am 100% certain that my friend's Z-28 is original. He's the original owner (unlike the case of the car in Terry's link) and was such a fanatic about originality that he never touched a thing. The only exception is the battery. He removed the original battery from the car years ago and stored it but it started to leak and he had to dispose of it. That still bothers him.

In any event, the fact that the oil filter in the Camaro in the link is the same as the one in my friend's car not only establishes that the one in the link is original, but also means we have 2 "data points" establishing the fact that the assembly line filters were different with respect to silk screening. I think it will be extremely difficult to add another "data point" on this score. However, I'm comfortable with the 2 and I'm very confident that Corvettes were the same as Camaros as far as oil filters go.

I have a friend that is the original owner of his 1969 Corvette. He claims that he saved the original oil filter from his car and that it's somewhere in his cluttered basement. He is a "pack rat" so I think it's very possible that what he claims is true. Plus, the house that he lives in now is the same house he lived in then (he's lived other places over the years but moved back to his parents' house when they passed away). If I could get him to find it, that would answer several questions, most notably whether early-build 1969's actually used the PF-29 but also whether the silk screening was different than SERVICE filters. Right now, though, I'm pretty confident about the silk screening difference but it would be nice to have another "data point".

[Paul O.]

Re: PF-25 Oil Filter Revelation

I have never seen the black/white filters, but someone in the past did mention that they thought they were black/white. However, I at the time believed they did not exist, but I am wrong, and Paul in going forward please no more side or back of the head shots.

Ron

Check with Mark I did not take that photo I am not that fast nor did the wife take the photo.

Paul 18046

[Paul O.]

Re: PF-25 Oil Filter Revelation

Joe

Would love to see that filter also hope your friend finds it.

Paul 18046

[Kenneth B.]

Re: PF-25 Oil Filter Revelation

We (and I mean several of the posters in this thread) have seen a 1972 with 4 miles showing on the odometer and another one with less than 300 miles showing. Both had oil & filter changes. As I said we were all good Boy Scouts.

I don't know about 4 miles but most of us in the day & I still do it now change the oil & filter after 500 mi. in case any shavings ETC. were in the oil. As I recall in the old old days Cars were filled with so called break in oil.
KEN

[Terry M.]

Re: PF-25 Oil Filter Revelation

I don't know about 4 miles but most of us in the day & I still do it now change the oil & filter after 500 mi. in case any shavings ETC. were in the oil. As I recall in the old old days Cars were filled with so called break in oil.
KEN

John Hinckley once posted about the oil they put in for "hot firing" the engine at Flint (and I presume Tonawanda). They filled the engines with oil from a reservoir. When the "hot fire test" was complete they drained the oil into a sump in the floor. That sump was connected to the same reservoir that the oil fill came from. How clean do you think that recycled (today we would call it "green") oil was? And that was what ALL our engines first ran on. Then the assembly plant added fresh oil after the engien was int he chassis.

And then us Boy Scouts quickly changed the oil so that any debris from casting/machining would be removed. Probably a good thing, but for other reasons than we thought.

[Paul O.]

Re: PF-25 Oil Filter Revelation

I also remember back in the day maybe not Corvette folk but many people changed their oil but not the filter that was changed every other oil change.

Paul 18046