Hi guys! New poster here. I've been reading your forums for a while and must say there is a ton of info here! So I though I'd return the favor and add a little myself.
I just opened up a repair shop, and am looking for a good quality (and economical) filter to use for our oil changes. Luckily this site has given me some good guide lines for criteria.
Anyways, I had one of the soliciting vendors drop off a sample of the filters he sells, so I ripped it apart to see what was inside. I couldn't find one of these disassembled on this site, so I figured I'd share what I found:
The filter is called Premium Guard, and is made in Korea. Cutting it open:
The filter cartridge has metal endcaps and a metal center tube. It has what looks to be a paper filter (feels like paper, sounds like paper, burns like paper). It has 50 folds, is 2.25 inches wide and 48 inches long. The folds were not evenly spaced, but weren't too bad. The assembly itself is quite stout. I could not pull it apart. I could also not deform it by hand.
The metal case is .6mm thick and had good resistance towards bending after I cut it open.
It has an antidrainback valve and a coil spring to hold the filter in place. Unfortunately, there doesn't seem to be a pressure relief valve.
Now on to the pics:
Disassembly:
The narrowest folds:
The widest folds:
After some more cutting:
Overall not too bad for a paper filter that costs $1.50, but the lack of a relief valve is a deal braker IMO.
Hope this helps anyone looking at one of these filters.
Any opinions from the pros?
Christian
I just opened up a repair shop, and am looking for a good quality (and economical) filter to use for our oil changes. Luckily this site has given me some good guide lines for criteria.
Anyways, I had one of the soliciting vendors drop off a sample of the filters he sells, so I ripped it apart to see what was inside. I couldn't find one of these disassembled on this site, so I figured I'd share what I found:
The filter is called Premium Guard, and is made in Korea. Cutting it open:
The filter cartridge has metal endcaps and a metal center tube. It has what looks to be a paper filter (feels like paper, sounds like paper, burns like paper). It has 50 folds, is 2.25 inches wide and 48 inches long. The folds were not evenly spaced, but weren't too bad. The assembly itself is quite stout. I could not pull it apart. I could also not deform it by hand.
The metal case is .6mm thick and had good resistance towards bending after I cut it open.
It has an antidrainback valve and a coil spring to hold the filter in place. Unfortunately, there doesn't seem to be a pressure relief valve.
Now on to the pics:
Disassembly:
The narrowest folds:
The widest folds:
After some more cutting:
Overall not too bad for a paper filter that costs $1.50, but the lack of a relief valve is a deal braker IMO.
Hope this helps anyone looking at one of these filters.
Any opinions from the pros?
Christian
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