Originally Posted By: vwalburn
Efficiency compared to? Have filter ratings changed? WIX isn't very good for WIX XP? Fram Ultra is a great looking filter but their lesser filters look like [censored]! They seem built for cost-savings. Guess you better do some more reading to catch up ... lots has transpired over the last 3~4 years.
Compared to other filters on the market, based on their ISO 4548-12 testing.
Originally Posted By: vwalburn
Once again, how many torn filters do you have on file? We all know how one report can explode into it's own life. Just trying to make sure we don't have Purolator-haters making this bigger than it is. If it's a big problem, than I will believe it. Sorry to be a pain but just want to make sure I'm not following a conspiracy.
Here ya go ... this is just a now partial list of just the reported failures on this site. The spreadsheet was orignally created by member Stu_rock but he didn't keep it up for very long, and nobody else took it over to keep reporting failures up through today. Probably 2 or 3 times more failed filters were reported than what's shown on the spreadsheet -
LINK
If you want to track down every thread of where those spreadsheet filters were reported, look in the spreadsheet column on who reported it, then go find their post history in the oil filter forum and do some reading.