2025 Rav4; Amsoil SS vis mix, 1.4k miles - used oil analysis

[D20]

OIL ANALYSIS RESULTS================================================================================ELEMENTAL ANALYSIS (ppm)--------------------------------------------------------------------------------
2025 Rav4 Non-Hybrid
Oil Analyzed: Amsoil SS 0W30 4 Qts & Amsoil SS 0W20 1 Qt. Both mixed at 4:1.
The oil has 1,433 miles on it, and it was put in at 10,697 miles, while the filter was changed with a Toyota filter. The oil used prior to this was TGMO 0W20, so .5 qts of residual is probably in the mix. Rav4 sees 7-11 short trips per day, each averaging 3.3 miles. My intent for analyzing at such a low mileage was to check if any anomalies would show from using what is approximately a 0W28 with the viscosities combined.

Iron: 3
Silicon: 16
Molybdenum: 206
Calcium: 1243
Chromium: 0
Sodium: 6
Antimony: 0
Barium: 0
Nickel: 0
Potassium: 0
Boron: 263
Phosphorus: 732
Aluminum: 2
Titanium: 0
Magnesium: 939
Zinc: 810
Copper: 2
Lead: 0
Tin: 0
Cadmium: 0
Silver: 0
Vanadium: 0
Manganese: 0
Lithium: 0
FLUID PROPERTIES & CONTAMINATION
Water: < 0.1 %
Viscosity @ 100°C: 8.9 cSt
Acid Number (TAN): 7.99 mg KOH / gBase Number (TBN): 4.1 mg KOH / gOxidation: 9 abs / cm

 

[dnewton3]

The vis is at the high end for a 20 grade.
The wear is as we would expect for such a short OCI.
With around 11k vehicle miles, it's still probably breaking in a bit (you don't mention how many OCIs it's had).

 

[D20]

FIRST OIL ANALYSIS (Ever Performed): (3/16/26)
======================================================
2025 Rav4 Non-Hybrid
Odometer: 6,644 miles
Sample Mileage: 1,042 miles
Viscosity Grade: 0W-20, Pennzoil Full Synthetic

OIL HEALTH & CONTAMINATION
Viscosity @ 100C: 7.91
Oxidation Value: 8.86
Fuel Dilution: 0.29
Soot: 0.14%
Water: Negative
Glycol: Negative
Potassium: 1
Silicon: 14

ADDITIVES (ppm)
Calcium: 499
Sodium: 2
Magnesium: 316
Phosphorus: 558
Zinc: 682
Molybdenum: 194
Boron: 32

WEAR METALS (ppm)
Iron: 5
Chromium: 0
Copper: 2
Tin: 4
Lead: 0
Aluminum: 2
Manganese: 1
Nickel: 0
Titanium: 0

TOTAL WEAR METALS: 10
WEAR PER 1000 MILES: 9.6

SECOND OIL ANALYSIS: (5/18/26)
======================================================
2025 Rav4 Non-Hybrid
Odometer: 9,264 miles
Sample Mileage: 2,620 miles
Viscosity Grade: 0W-20, TGMO

OIL HEALTH & CONTAMINATION
Viscosity @ 100C: 7.45
Oxidation Value: 8.95
Fuel Dilution: 0.07
Soot: 0.13%
Water: Negative
Glycol: Negative
Potassium: 2
Silicon: 19

ADDITIVES (ppm)
Calcium: 787
Sodium: 4
Magnesium: 284
Phosphorus: 607
Zinc: 863
Molybdenum: 86
Boron: 26

WEAR METALS (ppm)
Iron: 6
Chromium: 0
Copper: 2
Tin: 2
Lead: 1
Aluminum: 1
Manganese: 1
Nickel: 0
Titanium: 0

TOTAL WEAR METALS: 11
WEAR PER 1000 MILES: 4.2

LAB COMMENTS
All results are within normal ranges

 

[D20]

The vis is at the high end for a 20 grade.
The wear is as we would expect for such a short OCI.
With around 11k vehicle miles, it's still probably breaking in a bit (you don't mention how many OCIs it's had).

It had a total of six oil changes before the very first sample listed above that started the thread. Then, for the two oil samples that I listed after, it had four, then five.
I know, that's a lot of oil changes.
I was going to just share the latest one since it addresses a thicker viscosity than the "required" 0W16, but later I decided to include two prior samples that I had taken just for the sake of posting. Maybe somebody can use the information?