# Unicorn oil filter... **URL:** \ **Category:** Shift518 Automotive\ **Created:** [June 28, 2011, 9:39am UTC](https://forums.speedlife.net/t/unicorn-oil-filter/259142 "2011-06-28T09:39:33Z")\ **Posts on this page:** 1\ **Showing post:** 36
**Author:** ![Vovchandr](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/vovchandr/32/6275_2.png) [@Vovchandr](https://forums.speedlife.net/u/Vovchandr)\ **Post date:** [June 29, 2011, 8:09am UTC](https://forums.speedlife.net/t/unicorn-oil-filter/259142/36 "2011-06-29T08:09:39Z")
> [@Intro..........](https://forums.speedlife.net/t/intro/43069/12): > > isnt there something to do with the bypass pressure of the spring inside the filter itself? > im sticking with the toyo ryoki filter from the mazda rx8 (has the proper spring pressure and has a little more capacity), but i have used the oem blue filter made by honeywell. aftermarket filters have different bypass pressures than oem filters. If you want your head to explode > **[Mistake to use filter w/ lower bypass than OEM?](https://bobistheoilguy.com/forums/threads/mistake-to-use-filter-w-lower-bypass-than-oem.103377/#post-1398278)** > > I have a new Subaru, which puts me in a slight predicament oil filter wise because Subaru dropped their OE oil filter supplier Tokyo Roki, which made a high quality filter, and gave the work to Honeywell Canada, which of course makes FRAM. The new... **Mistake to use filter w/ lower bypass than OEM?** --- _[View the full topic](https://forums.speedlife.net/t/unicorn-oil-filter/259142)._