7.3 F350 25,000+miles Amsoil AME

Messages
747
Location
miami fl
I have two oil samples without the TBN , truck is a 2001 F350 7.3 diesel first sample taken at 20,000 miles Aluminum 3 Chromium4 Iron 151 Copper 12 Lead 11 Tin 0 Moly 6 Potassium 4 Silicon 6 Sodium 9 Calcium 4014 Magnesium 42 Phosphorus 1298 Zinc 1711 cST Viscosity @100 13.8 second sample taken at over 25,000 miles on oil truck has EAO99 oil filter and a cone EAO air filter Aluminum 4 Chromium 5 Iron 194 Copper 15 Lead 13 Tin 1 Moly 6 Potassium 4 Silicon 9 Sodium 9 Calcium 1969 Magnesium 21 Phosphorus 644 Zinc 770 cST Viscosity @100 13.4
 
Messages
4,998
Location
Milwaukee, WI
Something is weird with the Calcium, Phosphorus and Zinc numbers. They shouldn't half themselves in 5000 miles after staying relatively constant for 20,000 miles. I thought the iron was a bit high on the second sample, but 151 in 20k should become 189 in 25k, so it's not much higher than would be expected.
 
Last edited:
Messages
18,449
Location
East of IGO
 Originally Posted By: bepperb
Something is weird with the Calcium, Phosphorus and Zinc numbers. They shouldn't half themselves in 5000 miles after staying relatively constant for 20,000 miles. I thought the iron was a bit high on the second sample, but 151 in 20k should become 189 in 25k, so it's not much higher than would be expected.
Good catch!!!
 

lazaro

Thread starter
Messages
747
Location
miami fl
 Originally Posted By: buster
Umm no Tbn with 25,000 on the oil? Why?
I have a box of 10 postpaid oil samples from kellytractor that Im almost done with, got them for free with pump. The owner of the truck is a typical cheapskate, so Im doing what I can to monitor his rig.
 
Messages
4,627
Location
Western Washington
 Originally Posted By: bepperb
Something is weird with the Calcium, Phosphorus and Zinc numbers. They shouldn't half themselves in 5000 miles after staying relatively constant for 20,000 miles. I thought the iron was a bit high on the second sample, but 151 in 20k should become 189 in 25k, so it's not much higher than would be expected.
Either all three of these were on the apex of a nosedive ( not likely ), or somebody pushed the wrong button on the calculator. Why no TBN?
 
Top