2007 Tacoma V6, M1-EP 5W-30

[john_pifer]

Code:
Oil M1 EP 5W-30 M1 EP 5W-30

Miles in Use 10,158 7507

Miles 114,645 104,487

Sample Taken 28 June 2013 21 December 2012



Aluminum 6 4

Chromium 1 1

Iron 24 21

Copper 2 2

Lead 2 3

Tin 3 2

Moly 77 78

Nickel 0 0

Manganese 2 1

Silver 0 0

Titanium 0 0

Potassium 2 3

Boron 33 28

Silicon 16 16

Sodium 12 10

Calcium 1085 1048

Magnesium 782 714

Phosphorus 695 685

Zinc 803 835

Barium 0 0



SUS Visc @ 210*F 55.4 56.3

cST Visc @ 100*C 8.9 9.16

Flashpoint (*F) 405 390

Fuel (%)
Antifreeze (%) 0 0

Water (%) 0 0

Insolubles (%) 0.5 0.3

TBN 1.3 2.5


Blackstone comments, 28 June 2012:

Iron increased a little with this longer oil change interval, but rest assured, that's a normal finding. Iron should
increase with longer oil runs, since it's the only metal that tracks with time on the oil and other operational factors.
Longer oil runs, harder use? More iron. The opposite is also true. As long as other metals are holding pretty steady
(within a few ppm) the iron isn't making the oil abrasive, so you know you can run longer. You've not hit that tipping
point yet, so add 1,000 miles to your next run. The low viscosity is harmless, and the TBN is still hanging on at 1.3.

Blackstone comments, 21 December 2012:

We didn't know if your Tacoma was the 2.7L or the 4.0L so we went with the V-6. After this 7,507-mile oil run,
this sample compares well with universal averages, which show typical wear for this kind of engine after about 5,500
miles on the oil. Your engine wear is right in line with averages, even after a longer run, and that's just what we like to see. Toyota engines wear well, and yours is no different. The TBN read 2.5, so there was plenty of active additive to go longer. Try 9,500 miles next and check back to establish trends for your Tacoma. Nice!

So, what do you guys think?

 

[danthaman1980]

My (un)expert opinion: Nice run. The oil ended up on the thin side, but your truck seems to like it just fine. Keep doing what you are doing; the 10,000 mile run was perfect, no need to extend it any further.

 

[john_pifer]

Originally Posted By: danthaman1980
My (un)expert opinion: Nice run. The oil ended up on the thin side, but your truck seems to like it just fine. Keep doing what you are doing; the 10,000 mile run was perfect, no need to extend it any further.


Agreed, thanks for the comments. I'm not too much worried about the slight thinning, as the newer 1GR-FE engines in other Toyotas are spec'd for 5W-20 anyway, and there hasn't been any fuel present.

I don't think I'll spend any more $$$ right now on further oil analysis. Not really interested in extending OCI any further - with me driving 20,000 mi/yr, I'll just keep doing what I'm doing, keep using the M1-EP, and change oil twice/yr. Unless anyone has a better suggestion.

 

[chubbs1]

Great to see a run like this, excellent oil excellent engine! I would not worry about any more UOA's for a while either, this oil can handle your driving habits/engine no prob.

 

[Kool1]

What oil filter did you use in both intervals?

 

[buster]

Originally Posted By: danthaman1980
My (un)expert opinion: Nice run. The oil ended up on the thin side, but your truck seems to like it just fine. Keep doing what you are doing; the 10,000 mile run was perfect, no need to extend it any further.


+1 well said.

 

[john_pifer]

Originally Posted By: Kool1
What oil filter did you use in both intervals?


First run was a Fram Ultra, second run was a standard Bosch.

EDIT: 2nd run sample was taken on 28 June 2013. I had incorrectly stated that date in the OP.