97 Honda Prelude, 5W30 Amsoil, 5300mi

[TimRJ]

Here is my first UOA from my Prelude. Total miles on the car is 71,769. It spent it most of its life in Texas before I bought it from the previous owner who moved to Michigan. I am pretty happy with the results aside from the silicon. I drive the car hard on occasion with 7500k shifts. I even did a half tank of fuel with nothing but red line shifting.

One thing to note is that I had a timing belt failure about 1500mi into this oil run. The failure was do to the bolt breaking on the idler pulley of the belt tensioner. The loose bolt head tore the timing belt to shreds. My mechanic said no valves were bent on the head so I guess I got lucky.

Right now I have started an AutoRX treatment with Rotella 10W30 dino. I plan to run GC green in it after the AutoRX treatment to compare to the Amsoil.

Metals/Additives
Aluminium 4
Copper 1
Chromium 0
Iron 7
Lead 3
Tin 0
Magnesium 86
Molybdenum 43
Boron 209
Sodium 4
Potassium 2
Calcium 3103
Zinc 784
Phosphorus 668
Silicon 30
Nickel 0
Manganese 0
Silver 0
Titanium 0
Barium 0

Sus Viscosity @ 210F 63.6 s/be 55-63
Flashpoint 365 s/be >365
Insolubles 0.4 s/be Fuel% Antifreeze% 0.0
Water% 0.0

 

[Gary Allan]

I drive the car hard on occasion with 7500k shifts

That's one smooth turbine you got there. How did you break the 1M rpm barrier

j/k

Boring

(a good thing)

They flagged the silicon ..but there doesn't appear to be any related out of whack elemental values because of it. Did your wrench pull the valve cover too? That would perhaps be a source of the silicon.

Looks like, according to Blackstone, you've reached a 40 weight ..but when I convert it ..it's still in 30 weight country

(11.XCST) or did I screw up somewhere (it's ALWAYS possible) cst= 0.226xSUS-(195/SUS)

 

[HardbodyLoyalist]

I'm guessing some new seals/gaskets are leaching Si into the oil.

Nonetheless, I'd still check it top to bottom for any broken/loose hoses or gaps around the filter/intake system.

Otherwise, it's a sterling report.

 

[Drew99GT]

The H22 is for sure an interference engine. How you came away that clean, I'll never know. If the valves indeed aren't bent, then they DID touch the tops of the pistons! Go buy a lottery ticket ASAP.

 

[TooSlick]

Wear is much too low for this to be dirt ingestion....

This is a good look at the latest additive chemistry Amsoil is using in their ASL,ATM and possibly TSO formulations. Similar to the Mobil 1, EP add pack, but with higher levels of Boron and Calcium.

TS

 

[AndyH]

quote:

---

Originally posted by Gary Allan:
Looks like, according to Blackstone, you've reached a 40 weight ..but when I convert it ..it's still in 30 weight country

(11.XCST) or did I screw up somewhere (it's ALWAYS possible) cst= 0.226xSUS-(195/SUS)

---

I get 11.34 cSt using this viscosity conversion tool:
http://www.geocities.com/CapeCanaveral/3655/VisCnvt.html

Still looks like a xW-30 oil to me according to this viscosity chart:

 

[buster]

quote:

---

This is a good look at the latest additive chemistry Amsoil is using in their ASL,ATM

---

Yep and it's looking good so far. I'm not sure they are using more Boron than Mobil 1 EP though. The VOA's show 275ppm of Boron.

 

[TooSlick]

Buster,

You forget that boron is depleted in service....For example the Amsoil 0w-40 I tested after 10k miles had only 38 ppm of B, vs 110 ppm for the virgin sample. Boron depletion is especially evident the first time you run a formulation containing it.

I may do a VOA of this stuff just to see, but I believe the B level is > 300 ppm.

TS

 

[TimRJ]

quote:

---

That's one smooth turbine you got there. How did you break the 1M rpm barrier

j/k

---

Yes, just testing some new ceramic camshafts and pistons under development by G.E.

...alas, the engine only redlines at 7.5k

quote:

---

I'm guessing some new seals/gaskets are leaching Si into the oil.

---

That is what I am suspecting as well because if I am not mistaken, the crank seal was replaced and the valve cover did come off as well. I am positive some sort of oil seal was replaced but I do not have the parts list in front of me right now.

quote:

---

This is a good look at the latest additive chemistry Amsoil is using in their ASL,ATM and possibly TSO formulations.

---

Is this a very recent formulation change? This ASL was purchased last summer some time. I know they just changed the cardboard packaging for the cases. Did this coincide with a formulation change?

 

[buster]

Ted good point. That could be true.

 

[Clyde65]

wow! the oil stayed in grade real nicely.

 

[Dick in Falls Church]

>>>>Is this a very recent formulation change? This ASL was purchased last summer some time. I know they just changed the cardboard packaging for the cases. Did this coincide with a formulation change?

More likely that the label and box design change coincide with AMSOIL using up all the old labels and boxes.