Amsoil 0w-20, 7,481 miles, Hyundai Sonata 3.3L V-6

[TopJimmy]

Kept it under 7,500 for warranty purposes. Silicon hasn't improved much. K&N air filter has been in place since 2,000 miles on this vehicle.

 

[Solo2driver]

Why the big increase in cSt Visc @ 100-C over the various OCI's...were they all an Xw-20? Which brands?

 

[TopJimmy]

The first two UOA's were Royal Purple 5w-20. The third is Amsoil ASM 0w-20.

 

[Pablo]

It looks pretty good. On one hand your aluminum didn't go up, but on the other that Si is a bit border line (7-9ppm is native)

I would try a run with a paper AF and see if the Al and Si and Na go down.

Viscosity is near perfect.

 

[TopJimmy]

"I would try a run with a paper AF and see if the Al and Si and Na go down."

Why should Na (sodium) be lower? It is already at like 4.

 

[Pablo]

Well yes 4 ppm isn't much but it should be essentially zero in this oil. My hunch it's atmospheric dirt.

 

[bmwtechguy]

A friend put a factory AC delco filter back in his airbox on his Tahoe and the Si dropped in half after that. I believe the K/N air filters let more dirt through than paper filters after seeing this on several vehicles.

 

[TeeDub]

All four tests contained traces of sodium, which tells me it's from the environment. I'm not a K&N fan but I can't draw much of a conclusion based on these numbers

The oil is in fine shape with plenty of life left.....

 

[Dick in Falls Church]

Interesting in comments:

"--- if you'll let us know the brand you are using."

In first part: "OIL TYPE AND GRADE: Amsoil 0W-20"

Do I detect a disconnect here?

 

[TopJimmy]

"Do I detect a disconnect here?"

Initially, I failed to let them know the viscosity and brand so they wrote that comment.

I called them since there was no viscosity range on the report and gave them the oil brand and viscosity. They proceeded to type in the brand and viscosity and re-sent the report to me.

 

[Dick in Falls Church]

Gotcha! Looks like silicon has stayed in essentially the same range since first sample. Could be in oil, could be some gasket leaching. Doesn't appear to be associated with any metal wear.