As many of us already know, the Motorcraft FL400/910S can be used on the 1ZZFE motors for a little more capacity. I've done this without issue, but lately I've been using a standard size Fram Ultra. Changed the oil 350 miles ago and used the PL10241(900S equivalent). I'm not sure if the pressure is just too different than stock or what, but I ended changing it out after 350 miles. Upon startup, it felt like the motor idled low for a second or two, then it acted normally. As if there wasn't as much oil pressure on startup as there normally was. No oil pressure lights, just made it seem like a rough startup. I know that's a vague way to describe it, but that's what it seemed like to me.
I'm sure it would have been fine running the filter the whole OCI, but it was driving me nuts! Swapped the standard size Ultra in and the "issue" is gone. Nothing bad on Purolator of course, this filter just didn't work for me in this app. Just wanted to give a heads up to 1ZZFE owners who like to run oversize filters. I don't recall this happening when I used to run MC filters. I will however just stick with the factory size filter from here on out. No good reason for me to run the oversize IMO but this P1 was the last oversize in my stash.
I'm sure it would have been fine running the filter the whole OCI, but it was driving me nuts! Swapped the standard size Ultra in and the "issue" is gone. Nothing bad on Purolator of course, this filter just didn't work for me in this app. Just wanted to give a heads up to 1ZZFE owners who like to run oversize filters. I don't recall this happening when I used to run MC filters. I will however just stick with the factory size filter from here on out. No good reason for me to run the oversize IMO but this P1 was the last oversize in my stash.
