Amsoil AMO/SSO 60/40 mix,12,200 miles, 07 Toy 4.0L

[jetman]

I took the sample a little earlier this time because this is the first time I've run Amsoil AMO in this vehicle.

This oil is 8 mths old, w/12,200 miles on it. The vehicle is a 07 Toyota FJ Cruiser w/84,400 miles on it. When I changed the oil last time(12/11), I put back in 4 qts of Amsoil AMO 10-40w and 2 qts of Amsoil SS0 0-30w. A Mobil1-301 full flow filter was installed, and the almost 2 yr old Amsoil EaBP90 bypass filter remained in service on the TopDog V bypass system. No make-up oil, it doesn't use any.

COMMENTS: Base # is SIGNIFICANTLY LOW. Silicon is at a MODERATE LEVEL; Lube mixing is possible due to change in additive levels; replace oil filter and top off system w/fresh make-up oil if not done when sample was taken. Re-sample in 3,500 miles or 65 hrs.

The first #s are from 12 of 2010(17k miles lube time), the second #s are from 12 of 2011(18.7k lube time), and the 3rd #s are from 8 of 2012(12.2k lube time)
Code:


WEAR METALS-PPM

Iron 28....14....12

Chromium 0......0....0

Copper 1......1....1

Tin 0......1....0

Lead 0......0....0

Chrom 0......0....0

Nickel 0......0....0

Alum 5......6....7

Silver 0......0....0

Cadmium 0......0....0

Vanadium 0......0....0

CONTAMINANT METALS-PPM

Silicon 56.....70....43

Sodium 168....45....17

Potassium 4......2.....2

MULTI SOURCE METALS

Manganese 0......0....0

Titan 0......0....0

Molybdenum 2......0....0

Antim 0......0....0

Lithium 0......0....0

Boron 6......4....3

ADDITIVE METALS-PPM

Magnesium 14......11....16

Calcium 3394..3531..4351

Barium 0......0.....0

Phosph 568...497...809

Zinc 691...591...989



V100C 10.9...10.8...12.7

I-R Oxidation 58......64.....61

I-R Nitra 39......41.....17

TBN 2.66...2.18...2.48

Fuel
Soot Vol
Water Vol

As yawl may recall, at the last oil change(12/11) I removed the almost new Amsoil AeA238 air filter element and installed a stock Fram. I also removed the permenent secondary air filter element that is downstream from the replacable elemnt, in hope of reducing the silicone level. It's a little lower now????

Unless yawl convince me otherwise, I think I'm gonna leave the oil and oil filters in place for another 3000 miles/2 mths, then I'll change the oil and filters w/100%(6 qts) Amsoil AMO, the ff filter to a Fram XG8A. I'm gonna change the air filter element back to my lightly used Amsoil EaA238 NOW.

In the future I'll plan to do 15k mile oil and ff filter changes.

What do yawl think?

Don

 

[Donald]

So you are thinking the silicon went down because of switching to a Fram filter. I thought the Amsoil Ae filter was a super filter?

Why isn't the bypass dealing with the silicon?

I agree 15K sounds to be an ideal OCI.

Donald

 

[bourne]

Is sodium an additive for amsoil ?

 

[jetman]

Originally Posted By: Donald
So you are thinking the silicon went down because of switching to a Fram filter.

Or removing the permanent downstream element which may have been falling apart?

Originally Posted By: Donald
Why isn't the bypass dealing with the silicon?

Donald

It is, why wouldn't it be? OAI says Si could also be an anti-foaming agent in the oil.

 

[jetman]

Since I've been doing UOA(2 yrs-31k miles), I've installed 3 different brand air filters in an attempt to lower Silicon levels all without success. Recently, I found evidence(dust) of an air leak around the perimeter of the air filter element. I installed wx strip to the sealing flange of the air box to improve the seal.

I decided to change the oil and both the full flow & bypass filters now. The bypass filter was installed 01/11 and had 31k miles on it. It has been working overtime this whole time because of the high Si #s. The oil and M1 ff filter had 14k miles since new.

I cut open both filters. I'll post more pics of the ff and bypass elements in a few days after they drip dry.
Here is a pic of the bottom of the bypass.

 

[Brons2]

that looks pretty nasty! I guess maybe that oil sits in the bottom of the filter and doesn't circulate as much.

 

[webfors]

that's a lot of crud at the bottom of a filter.

 

[jetman]

Here is the pic of the oil filter elements. Upper is the ff M1, lower the Amsoil EaBP90.

 

[ltslimjim]

To me, that shows how much more crud a bypass can be pulling out of your 'in use' oil to effectively keep it cleaner and TBN higher for longer.

Hope the silicon levels calm down. I didn't think SSO used silicon but I dont know about AMO.

However, no wear problems appear to be present.