Hey Puffnstuff,I quit using fram many years ago after it was revealed that they used the cardboard end caps. I currently use baldwin hd filters in my truck. The oil filter study is very extensive and I first saw it when it was being hosted by mini mopar back in the 90's. Wix has always made quality filters and I wouldn't hessitate to use one.
I haven't, but I believe that site I mentioned cut one open and foundAnyone cut open a Toyota filter?
I've always used Castrol 5W30 and have been using their synthetic with no
I use Amsoil's standard 5W-30 Synthetic.
You should be OK, bot the only way to know for sure is to do an analysis to assess the additive levels.how many miles can i expect with a napa gold filter. i picked up two today and have 6k on my filter and castrol syntec 5x30. i was shooting for 10k (1 year) before changing the oil and filter. the guy at napa said 4k for the filter so i'm changing one today and will change the next in 4k when my oil reaches 10k.