- people whom seek out their best ROI will run their lubes and filters out. And you said it clearly yourself "very last mile of its useful life". The key being "useful". I suspect you're under two distinct misconceptions: 1) there is a linear slope differentiating the performance of wear protection in an OFCI (out to 15k miles max) 2) the useful life of oil and filters means shorter is always better Neither of these is true. - It's true the Fram Ultra is a great filter. So are many others. What seems expensive or inexpensive to you will have different valuations to others. However, for your planned OFCI (under 7k miles or less), just about ANY filter will do a decent job. - Any normal filter has a "buffer" much greater than you seem to give credit for. And that goes for oils, also. I have run "normal" MC and Purloator filters out to 15k miles, using ST dino oil, and got great UOA results. This is true for just about anyone bold enough to actually step out of their bubble and allow the paradigm shift to "wake" them. I routinely run conventional oils out to 10-15k miles, all on the same filters, and never have any issues. This is supported by UOAs, PCs, visual observations under the valve covers, etc. I am not saying the premium products cannot outperform normal everyday products; they certainly can. It's just that your self-imposed limit of 7k miles or less is WELL within the capability of "normal" products. And, you're not going to see any significant alteration of wear rates or cleanliness by using super-duper products for "normal" exposure limits. You've been wasting your money on the RP filters at 7k miles. But you'll also be wasting money on the Ultra at that OFCI, also. Why not actually start some experiments and see for yourself, rather than bench racing this Ultra thread to death (as has been done a bazillion times already; a fact you're already noted)? Why not run some UOAs and PCs with your current products, then change one product at a time, and see how they stack up? Why not actually do, rather than ask? I believe you'll be shocked to realize how capable "normal" products are, even further than you give them credit for.
Originally Posted by MichaelRS
... And why would anybody want to run their oil or their filter to the very last mile of its useful life? To save less than 80 bucks a year on an oil change or two? ... But if you change your oil and filter under 7,000 miles, hopefully UNDER 5.5K in my case, the Fram Ultra seems like a GREAT filter, with ALL the benefits of Royal Purple but without the price. ... I'm not interested in getting a great filter that's good up to 7,000 miles because I'm not interested in cutting it that close. I like a decent filter with a good good buffer in it's service life, but I feel that I've really been wasting my money on the Royal Purple for oil and filter changes under 6k. And being old school I'm uncomfortable just changing the oil but not the filter.