One way to get that data is...drum roll.."Spec sheets" for individual filters. Otherwise how is the consumer supposed to know that data?
I would choose the highest efficiency filter at the best overall cost point based on interval, use requirements, etc. I will compare any ISO tested filters that I need to use. That doesn't necessarily mean it would be your favorite flavor 99%@20 microns. Business often choose to change oil more frequently & paying money for a Boss doesn't make financial sense. Why would I just look at M+H only? I'll compare any ISO tested data I can get. As of right now Purolator is the one offering those.
The Pronto was on the Volvo when I bought it. The oil/pronto filter was just put on there prior to my purchase & plan on running the oil out a bit further first before changing them. It's a PG made & as we all know now have proven to be excellent quality. I have x2 OG Fram's waiting for duty I picked up for cheap. There's several reasons I don't currently run a Boss filter. First the Purolator One seems to be better ISO tested efficiency & I'm not going crazy long mileages so the One fits my needs well for now. Yep, I referenced the Specification Sheets for my model number, that I've posted here on BITOG, to decide which one I wanted to go with too. Cost is usually something I very much consider as well. Not to say it's expensive I've not looked them up recently.
It's 50/50 sometimes a new Ultra pictures gets posted here in the oil filter thread & I'll beat on it a bit while others that look good I will state such. Like I just did today
HERE. Like I've said previously, The Ultra was not broken & needed no changes but now we get wavy pleats & torn media... There's a reason folks complain that you refer to as "Beauty judges". I think they've seen the disaster unfold & are simply speaking their mind about what they're getting for their money now. That's been my only complaint w/ them...it was cheapened and the price remained or went up on some.
Many here have & know full well higher efficiency via an oil filter is one way to potentially reduce wear...You are not uncovering some sort of mystery there or unknowns. You want to choose an efficient filter to accomplish that right? Great, some here want to see testing data first. If Fram showed me a TG9549 ISO tested filters data today, it was better than what I saw from Purolator Spec Sheet, & good price point, I'd want to use the Fram. I think that is reasonable for any bitog to want. You claim Fram tests the avg of three specific filters as if that is superior to Purolator ISO data. You've put too much into Marketing pitches & not seen the real data that really tells the truth. Lately it seems Fram is doing a bit more to share data which is excellent no doubt. I hope they get better & get to the point of Purolator ISO Spec sheets. I'm sure that's what you & others here would like to see too I'd imagine. More data right? We should commend M+H for doing that b/c it may put the heat on other companies like Fram to do the same. A big company like Fram could do that if they wanted to. Perhaps some leeway for the smaller filters companies that may be a bit more cost prohibitive.