'99 Toyota Tacoma 10,000 mile Amsoil 0w-30 UOA

[3RZTacoma]

Update - Second UOA on my Tacoma. It has the 3rz-fe 4-cyl. and 105k miles. This is Amsoil 0w-30 SSO with Amsoil EaO filter. This is the third consecutive synthetic oil change in it's life, previously it always had Valvolne 5w-30 conventional. I think I will stick with this oil, it seems to be doing very well on it. This oil sample has 10k miles/ 1 year on it.

10k miles

IRON 16
CHROMIUM 0
NICKEL 0
ALUMINUM 4
COPPER 4
LEAD 1
TIN 0
CADMIUM 0
SILVER 0
TITANIUM 0
VANADIUM 0
SILICON 12
SODIUM 6
POTASSIUM 2
MOLYBDENUM 0
ANTIMONY 0
MANGANESE 0
LITHIUM 2
BORON 6
MAGNESIUM 13
CALCIUM 3673
BARIUM 0
PHOSPHORUS 602
ZINC 702

FUEL 1.7%
SOOT WATER VIS 100C CS 9.6
TBN 3.68
OXIDA 43
NITRA 28

Here is the UOA from 5k on the same oil: http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1534409&fpart=1

 

[Amkeer]

You gotta like those results.

 

[RTexasF]

Decent results but posted in the wrong area.

 

[tomcat27]

very impressive!

 

[Steve S]

Can't ask for too much better.

 

[buster]

Looks great, even with the 1.7% fuel!

 

[toyota62]

Agreed with buster.......

 

[dnewton3]

Could you go a bit longer? Possilby; the TBN has a bit more left, and the fuel is not stupid high, yet. But why risk it? 10k miles a year is a very easy thing to remember.

I'd OCI, and start over with this proven plan. UOA again at 5k miles to check on the fuel, and make sure it's not a chronic injector problem.

Other than that, can't argue with the success!