I use cheapest Fram or ST filters on my kids’ and wife’s cars at 5-7.5 k mile OCI and always change filter and use M1 or ST or Costco/KS synthetic at OEM oil weight recommendation. My DD are a 2017 Z51 Corvette and 2000 S2000. I will drive each 3-4k miles a year and use or will use Fram TG...