Hey all, New to BITOG. I have ran amsoil 12tbn diesel & marine oil since 5k miles in my o6 Duramax LBZ. Just recently I discovered my fuel supplier stocks Schaeffers. I use the preferred customer program from amsoil so my oil is about $24 a gallon, the filter is $14
Problem is shipping makes the deal not as lucrative, especially since amsoil charges tax. I'm pretty sure I can get the 9000 series for about the same if not a $ or 2 cheaper. My in-laws swear by schaeffers. I am considering converting from the amsoil w/eao52 to either 7000 or 9000 series and an ACDelco filter. I currently run 10k mile OCI's and sample at that time.
Problem is shipping makes the deal not as lucrative, especially since amsoil charges tax. I'm pretty sure I can get the 9000 series for about the same if not a $ or 2 cheaper. My in-laws swear by schaeffers. I am considering converting from the amsoil w/eao52 to either 7000 or 9000 series and an ACDelco filter. I currently run 10k mile OCI's and sample at that time.