My air filter is dirty I am using AEM dry flow filter and I haven't cleaned it for 10K miles that's probably why silicon is high. or this oil already have high silicon content?

My coolant is fine I check it every-other week and the level doesn't change.
this time around Potassium is 12 compared to 21, which was in May of 2009.
So I have no idea why its so much its kind of weird.


I dont know maybe this Amsoil 0W30 VOA has that much of silicon as part of conditioner?

Does anybody have a VOA of this oil so I can compare?

Did you have any work done to the engine at any point here? While the coolant indicators are in retreat, something is un-right (as others have said). It doesn't appear to be effecting normal wear patterns like we usually see, but is a bit unsettling none the less.

This surely warrants continued monitoring. I would probably be tempted to try some of the coolant tabs to see if the condition can be further reduced.

Kostia,
Make a $4 experiment. Buy a Subaru cooling system conditioner (in any Subaru dealership, small blue bottle) and pour it into coolant. It should stop getting coolant to oil. I had a same problem with my old Sentra and was able to fix it nicely.
Udachi! :-)

This is interesting, thanks for posting this UOA.

The Toyota 1.8L 2ZZGE engine is one of the engines that Amsoil flagged as being prone to sludge issues with extended drain intervals; which prompted them in pulling the EaO9 and 10 oil filters off the market.

Question: What’s the owners manual list for normal and severe duty oil change intervals?

Keep us posted on this.

Maybe we can see what Amsoil is seeing?

Spasibo, but I'll wait till the next oil test to find out if coolant gets into the engine. I don't see any evidence of it outside of engine. there is no smell when I check my oil dipstick or anything unusuall.