This blackstone report is from a 2003 GMC duramax with 45,000 miles on the truck. This OCI run was 5,000 miles. I wanted to see how well the AFE Pro Guard air filter was doing. I had previously been using the "blue" AFE filter and felt uncomfortable with it as I drive in dusty new construction areas. I also did a LOT of ideling in this run...to the tune of 18 hours one day.
aluminum 2
chromium 0
iron 7
copper 3
lead 5
tin 1
moly 25
nickel 0
manganese 0
silver 0
titanium 0
potassium 0
boron 1
silicon 5
sodium 2
calcium 3100
magnesium 9
phosphorus 1218
zinc 1381
barium 0
sus viscosity @210 F 81.0
flashpoint 420
Looks like the air filter did its job. Blackstone sugggested going to 6,500 miles oci.
aluminum 2
chromium 0
iron 7
copper 3
lead 5
tin 1
moly 25
nickel 0
manganese 0
silver 0
titanium 0
potassium 0
boron 1
silicon 5
sodium 2
calcium 3100
magnesium 9
phosphorus 1218
zinc 1381
barium 0
sus viscosity @210 F 81.0
flashpoint 420
Looks like the air filter did its job. Blackstone sugggested going to 6,500 miles oci.