Equipment Make: Ford
Equipment Model: SuperDuty 7.3L
Oil Use Interval: 3,324 Miles
Makeup Oil: None
Oil Type: Delo 400 15w40
Miles on Unit: 57,813
Aluminum 2/2/2/1
Chromium 1/0/1/2
Iron 12/7/9/11
Copper 8/2/3/3
Lead 30/4/3/2
Tin 2/2/0/1
Moly 231/206/52/3
Nickel 0/0/0/1
Manganese 0/0/0/0
Silver 0/0/0/0
Titanium 0/0/0/0
Potassium 3/1/0/0
Boron 130/122/21/18
Silicon 10/8/18/5
Sodium 5/1/2/7
Calcium 3076/3531/3094/2470
Magnesium 10/7/10/70
Phosphorus 1535/1337/1172/1007
Zinc 1478/1592/1393/1129
Barium 0/0/0/0
Viscosity SUS @210dF
Should be 69-82
Tested 71.6
Flashpoint
Should be >405
Tested 430
Fuel Dilution
Should be Tested
No Antifreeze
Insolubles 0.3
BlackStone Comments: You mentioned that while this oil was in use your F350 was "heavily loaded." This most likely explains the increase in lead we found. Lead comes from the bearings and you can see the hard work put extra stress on the lower end of your 7.3L. It's a good idea to use short oil runs when you're working your engine extra hard, as the excess wear metals are abrasive. All other wear looks good so we doubt the increased lead signals a mechanical problem developing. It should improve next time. No harmful contaminants were found. Check back for another look.
Left column is current UOA and the next column right is the previous run of Delo 400. During this OCI I installed a new intercooler and new high pressure oil pumps. I believe I'm having a lube oil pressure issue at high RPM and high load. I think when the engine is running 2700 RPM or more the HPOP is starving the engine for oil, however I have not had a chance to prove that theory yet. Other than the lead the UOA looks pretty good.
Equipment Model: SuperDuty 7.3L
Oil Use Interval: 3,324 Miles
Makeup Oil: None
Oil Type: Delo 400 15w40
Miles on Unit: 57,813
Aluminum 2/2/2/1
Chromium 1/0/1/2
Iron 12/7/9/11
Copper 8/2/3/3
Lead 30/4/3/2
Tin 2/2/0/1
Moly 231/206/52/3
Nickel 0/0/0/1
Manganese 0/0/0/0
Silver 0/0/0/0
Titanium 0/0/0/0
Potassium 3/1/0/0
Boron 130/122/21/18
Silicon 10/8/18/5
Sodium 5/1/2/7
Calcium 3076/3531/3094/2470
Magnesium 10/7/10/70
Phosphorus 1535/1337/1172/1007
Zinc 1478/1592/1393/1129
Barium 0/0/0/0
Viscosity SUS @210dF
Should be 69-82
Tested 71.6
Flashpoint
Should be >405
Tested 430
Fuel Dilution
Should be Tested
No Antifreeze
Insolubles 0.3
BlackStone Comments: You mentioned that while this oil was in use your F350 was "heavily loaded." This most likely explains the increase in lead we found. Lead comes from the bearings and you can see the hard work put extra stress on the lower end of your 7.3L. It's a good idea to use short oil runs when you're working your engine extra hard, as the excess wear metals are abrasive. All other wear looks good so we doubt the increased lead signals a mechanical problem developing. It should improve next time. No harmful contaminants were found. Check back for another look.
Left column is current UOA and the next column right is the previous run of Delo 400. During this OCI I installed a new intercooler and new high pressure oil pumps. I believe I'm having a lube oil pressure issue at high RPM and high load. I think when the engine is running 2700 RPM or more the HPOP is starving the engine for oil, however I have not had a chance to prove that theory yet. Other than the lead the UOA looks pretty good.