Toyota Matrix 1.8L 2ZZ-GE with M-1

[mark40]

This is the first test for our 2005 Toyota Matrix 1.8L 2ZZ-GE, 160,000 miles. Used dino at 3000 mi intervals up to about 70,000 and switched to M-1 at 5,000 mi interval thereafter. Any thoughts on the higher than normal Iron? Also was not sure why the antifreeze had a question mark. Also can you shed light on this comment from lab:"Sodium could show coolant, but it may also just be oil additive from previous oils". Thanks, Mark

ALUMINUM- 5
CHROMIUM- 1
IRON- 25
COPPER- 1
LEAD- 0
TIN- O
MOLYBDENUM- 65
NICKEL- 0
MANGANESE- 1
SILVER- 0
TITANIUM- 0
POTASSIUM- 0
BORON- 30
SILICON- 9
SODIUM- 97
CALCIUM- 1263
MAGNESIUM- 650
PHOSPHORUS- 690
ZINC- 828
BARIUM- 0

SUS Viscosity @ 210°F- 56.0
cSt Viscosity @ 100°C- 9.08
Flashpoint in °F- 375
Fuel %- Antifreeze % ?
Water %- 0.0
Insolubles %- 0.3

 

[CT8]

Maybe Winter? the next uoa will tell. What was the dino oil?"

 

[Al]

If you have been using Mobil 1 for the last couple oil changes I don't know where the sodium is coming from. Any other aditives added?

 

[mark40]

CT8- The dino was bulk oil from the mechanic who performed them- likely advance auto's brand

Al- Been using synthetic for the last 90,000 mi at 5000 mile intervals. In correction to my OP, the last change (or 2) have been a bulk advance auto synthetic, not-mobil 1.