4WD
$50 site donor 2025
Ok - pretty much where AC Delco is - but maybe twice the service life … Thanks
Thoughts on Purolator Boss filters
- Thread starter BigShug681
- Start date
Yep, they can claim 99% all they want but its the fine details. 99% at what micron? When I contacted them about the PBL10241, it was 99% at 42 microns. There are cheaper filters with better efficiency numbers (even the pure one). Most people don't run OCIs over 10K (neither do I) so no benefit to me. That said, it is a well built filter.
Here's some ISO 4548-12 test data done on the same sized filters (for same vehicle application) which gives a better comparison.
The Boss and WIX XP both came in at around 63% @ 20u. The other 3 filters tested were an obviously better.
https://bobistheoilguy.com/forums/t...e-point-and-burst.334882/page-19#post-5789087
The Boss and WIX XP both came in at around 63% @ 20u. The other 3 filters tested were an obviously better.
https://bobistheoilguy.com/forums/t...e-point-and-burst.334882/page-19#post-5789087
Fordbossme says the ford racing filter is identical to the Boss except the bypass valve is at the top something he prefers you might want to look into that since you have a cobra
- Joined
- Sep 13, 2020
- Messages
- 99
I replaced a MC FL1A that developed an awful startup slap because the ADBV failed. No such issues so far on the Boss. Im content for now. I have another OCI going on this Boss before I do anything. Current fill is M1 0w40.
The Ford Racing Filter - unless they have now changed it - has better efficiency than the Purolator Boss.
Purolator makes the filter you replaced
A little better? ... 100% vs 63% at 20μ is a bit better than a little.
Andrew bought new off the shelf filters for the testing, and I'd bet they were all recently made at the time since the models used are popular ones. Nobody really knows if the Boss has improved since then, unless you have $2000 to burn.
Well, we never got a date code, so... It was around the transition time. The ultra is still better. What else can I say?A little better? ... 100% vs 63% at 20μ is a bit better than a little.
Andrew bought new off the shelf filters for the testing, and I'd bet they were all recently made at the time since the models used are popular ones. Nobody really knows if the Boss has improved since then, unless you have $2000 to burn.
- Joined
- Sep 13, 2020
- Messages
- 99
This was the response i received about going from 15k to 20k miles on the packaging and the efficiency numbers on the particular filter im running(pbl14670).
Why anyone would go with a Boss over an Ultra right now is beyond me. The 99% @ 25 microns is only on the PBL30001 I suppose and i find that quite misleading.
Dave
Oh no, say it ain't so, that whole cheap insurance spiel.
Stop and take a breath. That's one hell of a long sentence.
My experience is purolator boss lasted longer than others before giving low pressure light from being full. High capacity catching medium chunks. The royal purple i have in now may never do it, could be a sign the engine is cleaned up. I'd pay $2 more for a purolator boss over fram ultra.
How poorly have you maintained your engines that an oil filter fills up and starts to clog? And wouldn't the bypass open up before a low pressure light illuminates? Most of what you're posting here doesn't make sense.
I bought my car used with over 200k miles and it was doing that as a way to tell me to change the filter
I think what I'd like to know the most is how much filtering is done at what micron level before going into bypass. Im not sure if a machine exist to show during testing when a filter is in bypass whether it be at start up or cold temperatures or so many miles before the filter mileage limit. It be neat to know or be able to monitor
4WD
$50 site donor 2025
A little better? ... 100% vs 63% at 20μ is a bit better than a little.
Andrew bought new off the shelf filters for the testing, and I'd bet they were all recently made at the time since the models used are popular ones. Nobody really knows if the Boss has improved since then, unless you have $2000 to burn.
