Once a year I change my
oil ( 5W-30 Mobil1). A few weeks ago I collected 8 + quarts out of my Windsor after 1,700 miles of driving (1 year). I sent a sample off to Blackstone Labs to see what they thought of it. Below are their findings. Any thoughts?
Bob
The
oil's viscosity measured in the 5W/30 to 10W/30-grade range. We can't tell you the brand but it
has a pretty standard additive package. The TBN was 8.9, loads of active additive remaining, so we don't
think it has been in use very long. Universal averages for wear metals in
oil from the Ford 5.8L are based on
a 3500-mile oil run. Most wear metals looked good. Lead was high and could be from a particle streak
through a bearing, which is temporary. We'll know more next time. We suggest a ~3000-mile oil change and
check back.
ALUMINUM 2 PPM
CHROMIUM 1 PPM
IRON 6 PPM
COPPER 1 PPM
LEAD 17 PPM
TIN 0
MOLYBDENUM 81 PPM
NICKEL 0
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 1 PPM
BORON 64 PPM
SILICON 8 PPM
SODIUM 6 PPM
CALCIUM 2385PPM
MAGNESIUM 16 PPM
PHOSPHORUS 656 PPM
ZINC 790 PPM
BARIUM 0
cSt Viscosity @ 100 C 10.05
SUS Viscosity @ 210 F 59.4
Flashpoint F 370
Fuel % < 0.5
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.2
TBN 8.9