Yes, MR. 2010 rav4 3.5 again. I am having problems finding a cartridge filter for synthetic oil. I was told that regular oil filters need synthetic filters for synthetic oil. Why can I not find one in a cartridge filter, maybe it is not necessary.
that's nonsense. Just use normal filters.
Generally, today’s oil filters are suitable for both conventional and synthetic oils. I use full synthetic too and get what ever oil filter fits my car at Auto Zone. I generally use STP. I’m not devoted to the brand but can usually get STP 5qt full synthetic and STP oil filter for around $30 give or take a few bucks.
You can use any cartridge filter with synthetic oil. But yes, there are oil filter manufacturers out there like STP that have a "regular" and "long life" oil filter. But really, that's just referring to the quality of the filter. Always go for the better quality.
