For context on the comments, when I filled out the card to send in with the sample, I asked if they could tell about sludge amount in the engine, and also about the condition of the timing chain components. I also noted that this vehicle does not get driven much, sits a lot. The 3,500 miles was over about eight months.
Blackstone
Motorcraft Synthetic Blend 5W30
2004 Ford Explorer, 4.0L
135,351 on vehicle, 3,516 on oil.
No make up oil added.
First sample
"Aaron, Sludge can be a hard thing for us to diagnose since it often stays inside the engine. There's no sign of poor wear though, so all things considered, we think your Ford is doing just fine. Universal averages for this kind of V-6 are based off of oil run 5,100 miles, and while your sample doesn't have as much use on it, metals are reading about as low as could be expected, meaning the internal parts are getting along well together. The viscosity is a touch thin for 5W-30, but that's not a big deal. No fuel or coolant contamination was detected. Nice one!
Aluminum: 2
Chromium: 0
Iron: 5
Copper: 2
Lead: 0
Tin: 0
Molybdenum: 16
Nickel: 0
Manganese: 0
Silver: 0
Titanium: 1
Potassium: 0
Boron: 107
Silicon: 11
Sodium: 26
Calcium: 1279
Magnesium: 621
Phosphorus: 745
Zinc: 815
Barium: 0
SUS Viscosity at 210: 53.3
cSt Viscosity at 100: 8.26
Flashpoint in F: 405
Fuel: Antifreeze: 0
Water: 0
Insolubles: 0.3
Blackstone
Motorcraft Synthetic Blend 5W30
2004 Ford Explorer, 4.0L
135,351 on vehicle, 3,516 on oil.
No make up oil added.
First sample
"Aaron, Sludge can be a hard thing for us to diagnose since it often stays inside the engine. There's no sign of poor wear though, so all things considered, we think your Ford is doing just fine. Universal averages for this kind of V-6 are based off of oil run 5,100 miles, and while your sample doesn't have as much use on it, metals are reading about as low as could be expected, meaning the internal parts are getting along well together. The viscosity is a touch thin for 5W-30, but that's not a big deal. No fuel or coolant contamination was detected. Nice one!
Aluminum: 2
Chromium: 0
Iron: 5
Copper: 2
Lead: 0
Tin: 0
Molybdenum: 16
Nickel: 0
Manganese: 0
Silver: 0
Titanium: 1
Potassium: 0
Boron: 107
Silicon: 11
Sodium: 26
Calcium: 1279
Magnesium: 621
Phosphorus: 745
Zinc: 815
Barium: 0
SUS Viscosity at 210: 53.3
cSt Viscosity at 100: 8.26
Flashpoint in F: 405
Fuel: Antifreeze: 0
Water: 0
Insolubles: 0.3