Purolator One , bad QA/QC

[Ridgelineguy]

This morning I changed the oil (3200 miles) on My wife’s 2022 Chevy Blazer RS 3.6 (31000 miles). I always check the oil filter for anything picked up out of the norm in the filter media. Today I was very surprised to find a piece of string tied around the filter. Purolator one PL21495. Supposed to be a better than average filter. I cannot believe the lack of quality control on a simple filter. Has anyone else ever found something like this? I have half a sense to send this to purolator. How many people never open their filter and have no idea that there may be a problem.

 

[Bottom_Feeder]

Outrageous. By all means, complain loudly to Purolator about this lack of quality control and tell us what they have to say.

 

[EvoMan]

I’m not sure the string is a defect. IIRC, MotorCraft filters used to come that way. What’s the date code on the filter?

 

[Lilliston]

I think I missed it-- What's the defect?

 

[Sayjac]

"IF" the presence of the assembly string is the sole basis for the topic title, then I'm not seeing "bad QA/QC". Assembly string is somewhat common on larger Purolator made filters. If something else, need more explanation. 'What I can see', looks like the filter did its job at 3200 miles.

Thanks for c&p.

 

[Pablo]

Pictures of louvers not loading

 

[I<3oil]

 

[Kira]

Before I read the OP's words, I saw the pictures, including the 'common enough' string.

I thought, "What we need here is a "Stringed Filter" sub-forum...just to break it up a bit.
While eye-catching or unexpected to some, it's completely OK.

 

[Ridgelineguy]

I’m not sure the string is a defect. IIRC, MotorCraft filters used to come that way. What’s the date code on the filter?

I will have to check the date code. I believe this is a pack of 12 from Rock Auto

 

[53' Stude]

This morning I changed the oil (3200 miles) on My wife’s 2022 Chevy Blazer RS 3.6 (31000 miles). I always check the oil filter for anything picked up out of the norm in the filter media. Today I was very surprised to find a piece of string tied around the filter. Purolator one PL21495. Supposed to be a better than average filter. I cannot believe the lack of quality control on a simple filter. Has anyone else ever found something like this? I have half a sense to send this to purolator. How many people never open their filter and have no idea that there may be a problem.View attachment 261752

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Ice pictures. What went back on and in?

The assembly string been used since probably 80’s I’d wager to guess. What was date code also? Thank You

 

[Chris142]

Purolator has been putting that string on filters for as long as I can remember.

 

[factorytuned2012]

run an ST or AC Delco

 

[Ridgelineguy]

Before I read the OP's words, I saw the pictures, including the 'common enough' string.

I thought, "What we need here is a "Stringed Filter" sub-forum...just to break it up a bit.
While eye-catching or unexpected to some, it's completely OK.

Based on your comment this is to some degree ….. common in the manufacturing process? I considered this a foreign object in the filter media. If it were to degrade and separate it could go up through the bypass valve and up into the motor….who knows from there. Mechanical Engineer here , Theorizing what potentially could happen.

 

[twX]

If the string came untied and made its way through the bypass valve, it could end up getting stuck in an oil supply hole to a bearing.

I'm guessing it's there to help support the media during the gluing process or something. I don't think it's a good idea to keep it on there.

 

[doitmyself]

I was surprised it was more difficult than I anticipated to find pics of the infamous Purolator string:

 

[Sayjac]

I typed in 'Purolator Assembly String' into the forum search and found multiple entries. Linked is just one of many. I'd add, if the OP finds the string 'objectionable' easy solution is to change brands. Based on the findings though, not "bad QA/QC" as title states.

https://bobistheoilguy.com/forums/threads/purolator-p1-pl-21495-cut-open.347597/

 

[wings&wheels]

Based on your comment this is to some degree ….. common in the manufacturing process? I considered this a foreign object in the filter media. If it were to degrade and separate it could go up through the bypass valve and up into the motor….who knows from there. Mechanical Engineer here , Theorizing what potentially could happen.

Strings are not unusual, other manufacturers use a band of paper which also can drop to the bottom of the filter element.

 

[Ridgelineguy]

Based on your comment this is to some degree ….. common in the manufacturing process? I considered this a foreign object in the filter media. If it were to degrade and separate it could go up through the bypass valve and up into the motor….who knows from there. Mechanical Engineer here , Theorizing what potentially could happen.

Ice pictures. What went back on and in?

The assembly string been used since probably 80’s I’d wager to guess. What was date code also? Thank You

After removing Purolator filter above and the old Castrol EE, I Installed a AC Delco UPF63R and 6qts of Mobil 1 Truck / SUV.

 

[Ridgelineguy]

Strings are not unusual, other manufacturers use a band of paper which also can drop to the bottom of the filter element.
View attachment 261765

I typed in 'Purolator Assembly String' into the forum search and found multiple entries. Linked is just one of many. I'd add, if the OP finds the string 'objectionable' easy solution is to change brands. Based on the findings though, not "bad QA/QC" as title states.

https://bobistheoilguy.com/forums/threads/purolator-p1-pl-21495-cut-open.347597/

Well all, I learned somthing new today! Never ever have I heard of this, After years of researching oil and reading post on here. I’ve never seen a string used in the construction of filters. Now I know different, what I thought was a unicorn is infact a common manufacturing technique. Thank you all for being kind and letting me know it’s not a failed assembly of the filter.

 

[ZeeOSix]

If it was gold string, it would have been a unicorn, lol. Purolator has done this for years on certain filters.