One of our company vehicles is a 1996 F150 with the 4.9L I6 with ~75000 miles.
My first time personally changing the oil/filter (after an unknown OCI schedule/oil type) was to Mobil 1 Extended Performance High Mileage 5w30 and this FL-1‐A filter in May 2025, with the intention of doing annual...
That one looked great. The denso is all I've put on this car over several changes, but this is the first change since I've had a cutter (or the reason to cut it)
2017 Toyota Prius
146k current mileage
Mobil 1 Advanced Fuel Economy or EP since purchased at 99k
Unknown miles on this OCI, maybe 4k.
I just change it based on the MM.
Out: 90915-yzzn1, Mobil 1 Extended Performance 0w20
In: Mobil 1-203a (import) Mobil 1 ESP 0w20
Normally don't track or C&P...
Good info.
I just put in a magnetic drain plug and magnets on the filter to try to catch some of this.
Should I dump this oil (2500 miles on it) to try to remove most of the flakes and hopefully the new magnets keep it under control with fresh oil? I hate the idea that its all circulating.
There were a few C&P that failed the "flashlight test", one that the filter element was crooked, and a few people that mentioned them being restrictive.
It was probably fine, but my ocd felt better switching back to OEM, especially since I don't plan on my OCI going past 5-6k.
I don't have a microscope (anymore, had one as a kid, no idea where it went) but I may get a cheap one. Thanks for the advice! May be the motivation to actually do a used oil analysis.