My shop put a Pentius UltraFLOW oil filter on the GP when they changed the oil pan gasket a little while back. The oil, Valvoline MaxLife NextGen 5W-30, and filter currently have about 4.5 months and 6,000 miles on them and the OLM reads 39% remaining. I was planning on running the OLM down to 10% (so about 3,000 more/9,000 total miles) and sending a sample in for a UOA with TBN and TAN in order to see how long I can stretch the OCI using this synthetic blend oil as I have three more 5 qt jugs of it, but am wondering if I should change now due to the mileage on the filter. Pentius' website claims that their filters "are manufactured to meet or exceed original equipment (OEM) specifications", so should it be able to stand up to the full OCI following the OLM?
As an aside, I have a Bosch Premium filter ready for the next round in order to give me more confidence in having full protection out to 10,000 miles and I will probably go with a Fram ToughGuard after that.
As an aside, I have a Bosch Premium filter ready for the next round in order to give me more confidence in having full protection out to 10,000 miles and I will probably go with a Fram ToughGuard after that.