Bosch oil filter, 115,000 miles on car
UNIT AVERAGES / UNIVERSAL AVERAGES
ALUMINUM 3 4
CHROMIUM 0 1
IRON 6 10
COPPER 2 4
LEAD 5 5
TIN 1 0
MOLYBDENUM 46 38
NICKEL 0 0
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 0 1
BORON 0 71
SILICON 9 9
SODIUM 3 8
CALCIUM 2029 2189
MAGNESIUM 4 445
PHOSPHORUS 749 792
ZINC 946 934
BARIUM 0 0
SUS VISC 61.5 56-63
FLASHPOINT 350 >365
FUEL 0.8 ANTIFREEZE 0.0 0
WATER TR INSOLUBLES 0.5
BLACKSTONE COMMENTS:We reported a fairly low TBN for your first sample, in which the GTX oil was run 5,380 miles. You increased the oil use interval to 6,900 miles this time, and the TBN was 0.1, which is virtually non-existent. If you would like to run longer miles than this and would like to have active additive in the oil, you may want to switch to the Syntec. We found a little gas and moisture in this sample, both of
which can have an influence on TBN. The moisture was not engine coolant. Wear read normally and
shows little changed from the first sample. Nice wearing Honda!
-----------------------------------------------
In the name of science I decided to run this car down to what I perceived would be the near death of the TBN in order to see what my wear numbers might be. It seems as though GTX does quite well right up to the end. I ran this same oil in my Tacoma to 7,300 and got a good TBN. Obviously the 4-banger is harder on oil. Most of these miles are short trips on back roads. I wonder if a 10w-30 would hold up better over the long haul? I plan to drop the OCI to 5K, or increase it to 10K with syntec.
What do you think of these results?
UNIT AVERAGES / UNIVERSAL AVERAGES
ALUMINUM 3 4
CHROMIUM 0 1
IRON 6 10
COPPER 2 4
LEAD 5 5
TIN 1 0
MOLYBDENUM 46 38
NICKEL 0 0
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 0 1
BORON 0 71
SILICON 9 9
SODIUM 3 8
CALCIUM 2029 2189
MAGNESIUM 4 445
PHOSPHORUS 749 792
ZINC 946 934
BARIUM 0 0
SUS VISC 61.5 56-63
FLASHPOINT 350 >365
FUEL 0.8 ANTIFREEZE 0.0 0
WATER TR INSOLUBLES 0.5
BLACKSTONE COMMENTS:We reported a fairly low TBN for your first sample, in which the GTX oil was run 5,380 miles. You increased the oil use interval to 6,900 miles this time, and the TBN was 0.1, which is virtually non-existent. If you would like to run longer miles than this and would like to have active additive in the oil, you may want to switch to the Syntec. We found a little gas and moisture in this sample, both of
which can have an influence on TBN. The moisture was not engine coolant. Wear read normally and
shows little changed from the first sample. Nice wearing Honda!
-----------------------------------------------
In the name of science I decided to run this car down to what I perceived would be the near death of the TBN in order to see what my wear numbers might be. It seems as though GTX does quite well right up to the end. I ran this same oil in my Tacoma to 7,300 and got a good TBN. Obviously the 4-banger is harder on oil. Most of these miles are short trips on back roads. I wonder if a 10w-30 would hold up better over the long haul? I plan to drop the OCI to 5K, or increase it to 10K with syntec.
What do you think of these results?