Amsoil SS 5w30, 11.9K, 04 Chevy Tahoe

[Petersubaru]

Originally Posted By: Petersubaru
Originally Posted By: Challenger71
Quoted for truth. This is exactly the answer and is not debatable.

Originally Posted By: FZ1
It's NOT the oil! It's the WEAR SIGNATURE of the ENGINE! Any quality oil,like the Amsoil the op ran,is likley to produce similar results.
..isn't near 900 gallons of gas used in this run a lot...I tend to think that between 250-400 gals of gas would be used during each oil change..because my driving and weather conditions widely vary, I tend to base my oil changes on Gallons used...if you are interested, this article has something to say about it.@ http://www.agcoauto.com/content/news/p2_articleid/291
A correction to my link above @ http://www.agcoauto.com/content/news/p2_articleid/212

 

[DandR]

I changed my Amsoil SSO 0w30 for Valvoline synthetic 5w30 not that the oil had a bearing on it, (No pun intended) I also took the car (After oil change) to who worked on engine before, I had intake gaskets changed at 159000 and also oil and filter (The 25000 OSS 0w30 extended oil change) the oil was increasing in volume up the dipstick hence thinking it was the water (Antifreeze) but was told it would be milky and separated if it was the intake gaskets and water getting into the oil that way, I am wondering if it would be a breakdown of the filter, but what causes the problem with the bearings, I also was told to take it to a engine builder to hear the noise it is making (I thought it sounded like the timing chain) as it turns out it was a timing chain noise and the engine builder also said it was the timing chain chatter, but not that bad also he said that was normal noise from the 3.4 Chevy engine, I showed him the report what I posted before, nothing was said to be out of the norm, he just listened to the engine chatter and I was told that the 3.4 it is normal to make this noise.
I am out of answers.

 

[demarpaint]

Originally Posted By: DandR
I changed my Amsoil SSO 0w30 for Valvoline synthetic 5w30 not that the oil had a bearing on it, (No pun intended) I also took the car (After oil change)to who worked on engine before, I had intake gaskets changed at 159000 and also oil and filter (The 25000 OSS 0w30 extended oil change) the oil was increasing in volume up the dipstick hence thinking it was the water (Antifreeze) but was told it would be milky and separated if it was the intake gaskets and water getting into the oil that way, I am wondering if it would be a breakdown of the filter, but what causes the problem with the bearings, I also was told to take it to a engine builder to hear the noise it is making (I thought it sounded like the timing chain) as it turns out it was a timing chain noise and the engine builder also said it was the timing chain chatter, but not that bad also he said that was normal noise from the 3.4 Chevy engine, I showed him the report what I posted before, nothing was said to be out of the norm.
I am out of answers.


Oil levels don't rise unless something is mixing into the oil. Coolant would drop, and oil would rise, or you've got some serious fuel dilution in which case the oil would stink of gas. There is an outside possibility that the filter is bad, but if that was the case the oil level would rise by the amount of oil held by the filter and no more. An easy check for that would be to replace the filter and re-establish the full level. If it rises again you have problems with you cooling system or fuel system. An accurate UOA report would show coolant as well as fuel. Pressure testing the cooling system would also indicate a bad head gasket.


Both coolant and fuel dilution will ruin bearings.

 

[DandR]

Thanks demarpaint for the reply.

I did change the oil but ran it with the same filter for a week or two, it didn't increase up the stick, and now the filter is changed, I have checked it ever other day (I was told to keep a eye on the level)and it is still ok. it didn't smell of gas it did smell burned kind of, and I had my hand in the oil (Dropped a plug gasket) and it was black other than this it was just like I poured the oil out of a can on my hand, so who long will a engine last with these report numbers.

 

[demarpaint]

Originally Posted By: DandR
so who long will a engine last with these report numbers.


I have no idea, I hope for a long time for your sake.

Keep an eye on the oil level and the coolant level. Check to see if the oil smells like gas when you check it. You might want to consider doing a UOA at about the 1,000-1,500 mile mark of this OCI. That should tell you at that point if coolant or gas is mixing with the oil, and it won't be giving it too much time to really screw things up.

 

[DandR]

I did think it was a water problem, but the level is Ok.
I will do what you suggest, 1000-1500 mls. a oil analysis, to check levels,
Between this milage, I when I check the oils level I will
Smell for gas as well.

Thanks again for the help with this.

 

[DandR]

Can I ask what UOA and OCI stands for?

 

[Pablo]

Originally Posted By: DandR
Can I ask what UOA and OCI stands for?


Used oil analysis and Oil Change interval

I'm a bit confused by your posts. If your car has known mechanical issues, probably the last thing you should be thinking about is extended oil changes/and long life fluids.

Are you saying now all the mechanical issues have been remedied?

 

[DandR]

It doesn't have mechanical problems, well not till I tried to use extended oil changing Amsoil
oil any how, when I bought the car it had intake gasket problems like all 2000-2002 Impalas do from the factory, well I had them changed and at the same time oil and filter done, EA amsiol filter and 0w30 signature series oil, put 17000kms on the oil did a oil analysis test on it and now you are up (Everything else is explained in other postings) to date Pablo

Sorry I kidnapped this thread.

 

[Pablo]

Originally Posted By: DandR
It doesn't have mechanical problems, well not till I tried to use extended oil changing Amsoil
oil any how, when I bought the car it had intake gasket problems like all 2000-2002 Impalas do from the factory, well I had them changed and at the same time oil and filter done, EA amsiol filter and 0w30 signature series oil, put 17000kms on the oil did a oil analysis test on it and now you are up (Everything else is explained in other postings) to date Pablo

Sorry I kidnapped this thread.


If the car has no issues and has been fixed, then I say do a couple short runs with Pennzoil or another oil without sodium to flush the remainder out, then you can try a 10K run.

 

[steve20]

OP our 04 Tahoe had the least debris on the magnetic drain plug--by a far margin with PYB 5-30. The PYB was a one time thing, it is almost always Synpower or PP. My wife's driving style is a little more severe than yours, and with a 128% oci, the wear numbers looked way way better than what you have posted. My suggestion: try PYB 5-30 at 5K miles oci