Amsoil ATM 10-30 Chevy V-8 Close to 7K

[LargeCarMan]

Thoughts/Comments? Can you describe some of the values listed with the TBN? What is NITR and OXID?

Descr.: ENGINE Fuel Type: Gasoline

Make: CHEVROLET Oil Brand: AMSOIL
Model: CAMARO Oil Type:

Fluid Grade: 10W30

Unit No: 1991-CAMARO Equip. Model: Ser.No: 1991

SPECTROCHEMICAL ANALYSIS (ppm)

Tested Time on Oil 6,784 miles

Time on Unit
9,671 miles

Normal 15-APR-06
06-MAY-06
6784
Iron 47
Chrom 1
Lead 25
Copper 8
Tin 0
Alum 5
Nick 0
Silv 0
Silicon 44
Boron 199
Sodium 6
Mag 69
Calicium 3170
Bari 0
Phos 928
Zinc 1084
Moly 91
0
0
0

Lab No Physical Properties Additional Tests
Fuel Visc40 Visc100 Water Soot/
Solids Coolant CHANGE NITR OXID TBN
9,671
N/A
10.18
0
N/A
NO
NO
Nitr 16.0
Oxid 25.0
TBN 5.07


Lab No Brand Grade Product Analysis Recommendations
9,671 AMSOIL 10W30 NO CORRECTIVE ACTION REQUIRED, OIL IS SUITABLE FOR CONTINUED USE. RESAMPLE AT NEXT REGULAR INTERVAL

 

[Pablo]

I'm a little confused - was this a rebuilt? So most of the metals are break-in?

Is the Camaro driven hard? What kind of fuel? What kind of oil was used before?

In simple terms Nitration and Oxidation are relative numbers that show the amount of chemical and heat degradation the oil is showing. Essentially meaningless as a standalone number. With most oils a virgin run of the exact same batch of oil can be compared, or as most folks do compare it to the same oil run previously in their cars.

Amsoil not thickening is becoming a habit.

 

[LargeCarMan]

Yes...rebuilt 9,671 miles ago. At roughly 2,500 miles the engine was changed over from dino to Amsoil.

Driven hard, but idled lots last Winter...Premimum Unleaded.

 

[ConfederateTyrant]

Good to see Amsoil staying in grade more and more. Since this is a rebuild, it's likely that the amount of iron, lead, and silicon is due to break-in. After a change or two, they should lower.

 

[TooSlick]

Looks like they're still tweaking the latest additive chemistry.

Results look very good in any event.