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I've use Baldwin in the past. They seemed to be of quality construction but I only remember them being cellulose (paper) filters. I believe they are the OEM of Ferrari. That should speak for itself as to quality.
I use Baldwin for my tractor for oil and hydraulics. It's interesting that I found cross reference to WIX filters for diesel and hydraulic. I didn't know they had those.
Okay, I'm missing something, don't see anything readable here.So member adrianp89 brought this test to the Syn thread, but this test is good enough to have it's own thread and many guys have tuned out of the Syn thread. This test proves the benefit from spun micro glass filters, all of the top three performers where spun microglass, and others such as Wix XP weren't tested. Anyhow, spun micro glass not only filters better out of the gate, but lasts much longer and holds contamination better. The top three filters tested in order are Royal Purple, Amsoil EA and Fram Ultra in third and the most economical choice. The test shows a different name for the third place filter, but it was changed to Ultra that year 2011. Below is the test filter after it passed through the tested filter (the name of the filters on the left), this is a compilation of the filters and as you can tell no noticeable contamination 30microns pass through the royal purple filter. Very little passed through the Amsoil or Fram Ultra. Read through the test page to see all of the results. Bottom line, Cellulose filters simply do not filter as good as synthetic media at any point in your oil change interval.
It was the GM central oil filter study that is now 15 years later and I believe was taken down from the net, but it was up for a decade or better. You can still see the patches, which is a patch behind the tested media for what came through. As the top filters are no longer being produced, all we can take it the knowledge that shows how much better spun glass is, top 3 choices (rp-amsoil-fram ultra) were spun glass and 4th choice was blend with spun glass. This study also matches oil filter testing from a lab. Spun glass cannot be beat with paper, perhaps poly's can match it, but at the time those weren't tested.
That was back when amsoil filters used donaldsons synteq media. Nowdays amsoil says it uses a "proprietary synthetic media".
South Korea.
The new STP XLs are a PGI product. Excellent filters, and they are not significantly different than than the MSLs from O’Reilly or the CQPs from Advance.
Old XG is better than new XG. Old XG had wire backed synthetic media and had a huge filter element compared to other top filters. The ascent filtration test showed it to be the best. Then they switched and the description was quite confusing. Frams website said it was a dual layed synthetic media but then another part of the site said dual layered synthetic blend media. But a few folks called them maybe you did to and they said no its fully synthetic. Either way they claimed better efficiency than the old XG. I still got 2 XG2s for the ram. But the old and new XGs were unique to fram filters and the FE came when first brands bought champion labs. They then just cloned the amsoil eaO and royal purple filters and called them fram synthetic endurance. And now its all going bye bye since first brands tried to grow the business by buying up other brands
I would grab a few while you can. Ive never handled a cartridge filter honestly but id imagine its easy to feel if its wire backed. Even if its not the efficiency is fantastic maybe even better than the old XG. Maybe once you use those up we will be clear eyed on the filter future
