2008 Silverado 3K OCI on Chevron Supreme/Hastings filter
2006 Pontiac G6 GT 5K OCI Shaeffers S7000/Hastings filter
2005 Mercedes E320 10K OCI Mobil1 0-40/Mann filter
2004 Pontiac GTO 408 Iron Block Stroker Motor 25 Hour ( Engine run time) OCI with Shaeffers S7000 10-30/Dual Amsoil Ea0 filters.
All the above w/ AutoRX maintenance dose except the Mercedes.
2006 Pontiac G6 GT 5K OCI Shaeffers S7000/Hastings filter
2005 Mercedes E320 10K OCI Mobil1 0-40/Mann filter
2004 Pontiac GTO 408 Iron Block Stroker Motor 25 Hour ( Engine run time) OCI with Shaeffers S7000 10-30/Dual Amsoil Ea0 filters.
All the above w/ AutoRX maintenance dose except the Mercedes.