Yep, room for assembly error there.
New Mobil 1(108-A) made in Vietnam C&P
- Thread starter Glenda W.
- Start date
Haven't got any info from Highlilne Warren yet. I'll bug them again Monday. They said they would send me an email with the info if they could get it from the manufacturer.
Purpose of that metal cup is so the end tang on the coil spring doesn't dig into the dome end of the can. If it dug in too much, it could cause a weak spot, so the protective cap is there to prevent that.
Hope it doesn't have ruffles on that metal bypass disk.
Would be interesting to measure the bypass PSI crack open point.
Subaru filter so it would be interesting. My kitchen scale probably can’t handle itHope it doesn't have ruffles on that metal bypass disk.
Would be interesting to measure the bypass PSI crack open point.
The coil spring force due to compression would basically be the same with or without that metal cup on it. The cap is there to protect the coil spring from digging in or wearing on the can during use. If the can springs a leak, that's not a good thing. Maybe they rough cut the spring ends and found it easier to just put the cup over the end.Most likely to increase surface area onto the filter instead of having less spiraled spring metal pushing against it.
Increased surface area serves more than one purpose. Could be trying to solve more than one problem. But we'll see how many other filters forgo the cap.
The applied spring force is only a function of the spring constant and distance of compression. If it's compressed the same amount, regardless if there's a protective cap on the end or not, the applied force to the filter guts is the same. The cap is there to just protect the end of the can.
Yes, Most likely to increase surface area onto the filter instead of having less spiraled spring metal pushing against it (digging into it as you say).
The end of the spring that contacts the filter cartridge end cap doesn't have a protective metal cap over the spring. The force going into the end cap is the same if the spring is compressed the same, with or without the protective metal cap on the dome end of the spring. The force the spring creates has nothing to do with any "increased surface area". The force a coil spring makes in compression is solely based on the spring constant and how far the spring is compressed. The protective cap isolates the coil spring from the dome end of the can so the spring doesn't do any damage to the can. That spring has to be pretty stiff judging by how short it is. The wire diameter is pretty beefy too.
Last edited:
Like I mentioned Increased contact area is the goal it seems.
Some side by side M1 vs Pentius. The Pentius is a 7317 so a much larger filter.
Thanks for the C&P! Looks good.
M1 media was 58”L x 1 5/8” H. Depth 1/2”.
58 x 1 5/8 = 94.25
58 x 1 5/8 = 94.25
Best I could do with media cut out. Sorry I know it’s not ideal. I wrapped some cardboard around the center tube. First pic is showing light in the center tube. Second pic showing bypass valve with light on. No bypass leakage.
Last edited:
I looked at the M1-110A, 7317 equivalent, looked like typical PG. Thing is if I'm thinking of an M1, I'm buying the CQ Prem for less. If I had one "nitpick" thus far about the PG filters, occasionally get a bit carried away with the potting/glue. But not been so much it's a deal breaker.
Thanks for c&p.
Thanks for c&p.
Agree 100%. Especially CQP on sale. But for some the ease of a one stop shop may be worth it. I’m thankful Walmart now at least has this filter as an option.
Exactly right. If they added the spring cup cost, it was likely only because 1) a specific requirement to do so by the specifier, or 2) it enabled some other, more significant cost reduction. Perhaps it means sharing springs across more PNs or going thinner on the shell or something.
I called Highline Warren again today, and the filter Tech Line guy put me on hold and went digging around and came back and said he did have some documentation that said the Mobil 1 Extended filter was 99% @ 20u. I asked if there was any reference to ISO 4845-12 in the info he had, and he said he didn't see anything like that.
So it sounds like this new Mobil 1 is essentially like many of the PGI made filters coming out of Asia, and maybe this Mobil 1 filter is essentially using the same basic media. That's all I could find out. I told the guy if these are 99% @ 20u, then Mobil should put that info on their website since it would attract more buyers than if no specific efficiency info was given.
Similar threads
