Blackstone Report
Engine: GM 3100 V-6
Vehicle: '94 Pontiac Grand Prix SE 4door
Vehicle Mileage: 208,015
Oil Mileage: 887
Interval Dates: for less than a month ending 6/18/07
Oil Type: Trop Artic 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt)
No oil additives or fuel additives used
Oil Filter: Supertech
Air Filter: Wix
Driving Style: 2/3 Hwy and 1/3 City, mostly 30 mile 1 way driving to work and back.
See my previous UOA for more info. I've done 1k mile oil changes with oil I wanted to get rid of since my last UOA. It looks like 1k mile changes are perfectly safe and I'll probably try 2k mile changes. The Bars Stop leak probably helped but obviously didn't fix the problem. I only want the car to last until next April, hopefully it makes it. It has Trop Artic 5W-30 in it this time, no mixing. Blackstone said to stick with 1k-1.5k changes and thought I might be able to live with the problem for a while.
1st column: Current
2nd column: Mobil 1 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt)6975 miles
2nd column: Mobil 1 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt) 6018 miles
3rd column: Mobil 1 5W-30, 6012 miles
Aluminum: 1, 16, 3, 2
Chromium: 0, 1, 0, 0
Iron: 4, 90, 15, 11
Copper: 2, 15, 6, 4
Lead: 2, 213, 8, 21
Tin: 0, 8, 0, 0
Molybdenum: 51, 85, 82, 75
Nickel: 0, 1, 0, 0
Manganese: 0, 2, 0, 0
Silver: 0, 0, 0, 0
Titanium: 0, 0, 0, 0
Potassium: 8, 143, 0, 2
Boron: 129, 32, 41, 45
Silicon: 4, 20, 13, 14
Sodium: 10, 184, 7, 7
Calcium: 1955, 2689, 2210, 2241
Magnesium: 11, 40, 17, 19
Phosphorus: 571, 753, 610, 583
Zinc: 709, 912, 737, 708
Barium: 0, 0, 0, 0
SUS Viscosity @ 210 degrees: 60.90, 61.8 66.0, 59.9
Flashpoint: 410, 375, 380, 395 degrees F
Fuel: < 0.5% same
Antifreeze: ?, .37%, 0, 0
Water: 0.0% same
Insolubles: 0.2%, 0.5%, 0.5%, 0.5%
TNB: n/a, 2.8, 3.5, 2.1
Engine: GM 3100 V-6
Vehicle: '94 Pontiac Grand Prix SE 4door
Vehicle Mileage: 208,015
Oil Mileage: 887
Interval Dates: for less than a month ending 6/18/07
Oil Type: Trop Artic 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt)
No oil additives or fuel additives used
Oil Filter: Supertech
Air Filter: Wix
Driving Style: 2/3 Hwy and 1/3 City, mostly 30 mile 1 way driving to work and back.
See my previous UOA for more info. I've done 1k mile oil changes with oil I wanted to get rid of since my last UOA. It looks like 1k mile changes are perfectly safe and I'll probably try 2k mile changes. The Bars Stop leak probably helped but obviously didn't fix the problem. I only want the car to last until next April, hopefully it makes it. It has Trop Artic 5W-30 in it this time, no mixing. Blackstone said to stick with 1k-1.5k changes and thought I might be able to live with the problem for a while.
1st column: Current
2nd column: Mobil 1 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt)6975 miles
2nd column: Mobil 1 5W-30 (3.5 Qts) Castrol Syntec 5W-50 (1 Qt) 6018 miles
3rd column: Mobil 1 5W-30, 6012 miles
Aluminum: 1, 16, 3, 2
Chromium: 0, 1, 0, 0
Iron: 4, 90, 15, 11
Copper: 2, 15, 6, 4
Lead: 2, 213, 8, 21
Tin: 0, 8, 0, 0
Molybdenum: 51, 85, 82, 75
Nickel: 0, 1, 0, 0
Manganese: 0, 2, 0, 0
Silver: 0, 0, 0, 0
Titanium: 0, 0, 0, 0
Potassium: 8, 143, 0, 2
Boron: 129, 32, 41, 45
Silicon: 4, 20, 13, 14
Sodium: 10, 184, 7, 7
Calcium: 1955, 2689, 2210, 2241
Magnesium: 11, 40, 17, 19
Phosphorus: 571, 753, 610, 583
Zinc: 709, 912, 737, 708
Barium: 0, 0, 0, 0
SUS Viscosity @ 210 degrees: 60.90, 61.8 66.0, 59.9
Flashpoint: 410, 375, 380, 395 degrees F
Fuel: < 0.5% same
Antifreeze: ?, .37%, 0, 0
Water: 0.0% same
Insolubles: 0.2%, 0.5%, 0.5%, 0.5%
TNB: n/a, 2.8, 3.5, 2.1