Oil change %
Member
Joined: 04-23-2009
Posts: 46
From: Mid-Michigan
Questions regarding the analysis.......
Did your lab report provide descriptive analysis? What did it say? Did it display a comparative target number?
How did you capture the sample? Was the engine hot.....and I mean hot, not just at operating temperature (it does take a considerable time get the oil to an operating temperature.....as compared to your engine coolant). Did you run the car for, oh let's say, an hour or so thru stop and go traffic, the freeway? Was the engine cold?
If the engine was cold, you started it and moved to a location to change it, then drained and captured the sample, you probably had raw fuel from the start-up caused by the DI. This also happens with regular injected vehicles as well. But generally to a lessor reading. This is ok, but should have been noted when you sent the sample in for analysis. The lab can make a valid judgment then.
Final question......who did the analysis.......Amsoil, Blackstone, etc.?
However, if this is a constant reading, I would change oil more frequently. You are diluting the lubricating properties of the oil. Your "metal" readings should provide some evidence of this.
Can you post a copy of the analysis? I'm not an expert but have "played" in the oil and analysis field for some time.
Did your lab report provide descriptive analysis? What did it say? Did it display a comparative target number?
How did you capture the sample? Was the engine hot.....and I mean hot, not just at operating temperature (it does take a considerable time get the oil to an operating temperature.....as compared to your engine coolant). Did you run the car for, oh let's say, an hour or so thru stop and go traffic, the freeway? Was the engine cold?
If the engine was cold, you started it and moved to a location to change it, then drained and captured the sample, you probably had raw fuel from the start-up caused by the DI. This also happens with regular injected vehicles as well. But generally to a lessor reading. This is ok, but should have been noted when you sent the sample in for analysis. The lab can make a valid judgment then.
Final question......who did the analysis.......Amsoil, Blackstone, etc.?
However, if this is a constant reading, I would change oil more frequently. You are diluting the lubricating properties of the oil. Your "metal" readings should provide some evidence of this.
Can you post a copy of the analysis? I'm not an expert but have "played" in the oil and analysis field for some time.
I would love for someone to read these for me. It was Oil Analyzers Inc. The sample kits are purchased thru Amsoil, but I believe the company is independent from Amsoil?.
I have the analysis reports in a pdf. form but I have never posted any thing like that on these forums?
There is 25 or so metals that they check and this time they say the magnesium was "low" for this fluid type?.
The infrared results states "Oxidation" was very high also.
With about 8k mi on this sample there is 3.8% fuel in sample.
They did ask for a model number so they can compare data to the proper standards for this unit. I gave them car info twice now, I guess I don't know what model number they want?.
Platinum Member
Joined: 05-09-2006
Posts: 6,805
From: "Upland" Mesa, Arizona
I'll find a copy of an oil analysis from one of my cars and post it. I don't have any saved on this computer. Although we use different companies for the analysis, the 2 can be used for a comparison.....however, remember I have a 2.4 ltr.
If you have your analysis saved to your computer you can download it to something like Photobucket, click to copy the {img} then link it to your post by pasting.
I think ChvyMgr. has a link to the "how to" in his signature.
In any event......generally, if you are showing "high" oxidation levels, you are not driving the vehicle far and long enough to achieve high enough oil temperatures to dissipate the condensation.
Also, we should carry on our conversation by PM. It's down to a personalized discussion and is off topic in this thread.
If you have your analysis saved to your computer you can download it to something like Photobucket, click to copy the {img} then link it to your post by pasting.
I think ChvyMgr. has a link to the "how to" in his signature.
In any event......generally, if you are showing "high" oxidation levels, you are not driving the vehicle far and long enough to achieve high enough oil temperatures to dissipate the condensation.
Also, we should carry on our conversation by PM. It's down to a personalized discussion and is off topic in this thread.
Senior Member
Joined: 01-13-2008
Posts: 4,708
From: Washington State, where it rains
Badandy is catching on and no ChevyMgr, your cool. As for fuel dilution, did you own this car new or used? Almost sound like the rings didn't quite seat right, using any oil? Maybe just a bad starting cycle dumping excessive fuel into cold cylinders.... since ita direct inj theres only one way for fuel to get in there....
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