1997 Ford F150 4.6
50,000 on engine. 20,000 on the Amsoil Dual Remote by-pass filter (BMK13). 20,000 on current Oil drain using Amsoil Series 2000 0w30. I use the Amsoil BE 110 and SDF 15 or 26 FF filters. Changed whenever I feel like it but try to change every 6 months(FF) and change the bypass every 2 years.
2003 VW Jetta TDI(Diesel)
20000 on engine. 10,000 with the Amsoil Single remote by-pass (BMK11). 10,000 on current filter and oil. Using Amsoil Series 2000 0w30. No analysis yet getting to it this week. I am using the BE 100 on this run.