10K oil analysis
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Senior User
Joined: Oct 2010
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From: Sunshine Coast, BC
10K oil analysis
I put in Motorcraft 10W30 CJ-4 non-synthetic at 4,700 mi.
This change was at 10,103 mi so this oil has 5,403 mi
This time I used Rotella T5 10W30 Synthetic Blend which cost me $3.14/qt including tax at Wallyworld. I laid in 30K miles worth of changes at that price.
I did not idle more in this 5k miles vs the first 5k miles. But I did have some home improvement projects going on which means lots of trips to Home Depot. That 12 mile round trip, some of which is freeway, is not enough to get the engine up to temperature. I think this is the reason for the 2% fuel content.
I don't think it was doing more regens during the second 5K but now I have a notepad in the truck and I'm trying to note the miles for each regen to get an idea. Easy to miss them though; I wish that notice would stay put till you acknowledge it just like all the rest of them. What's wrong with that idea? Sometimes I really cannot understand what these designers were thinking when they made certain choices.
Anyway, here it is and we'll see what it looks like at 15K regarding fuel content.
This change was at 10,103 mi so this oil has 5,403 mi
This time I used Rotella T5 10W30 Synthetic Blend which cost me $3.14/qt including tax at Wallyworld. I laid in 30K miles worth of changes at that price.
I did not idle more in this 5k miles vs the first 5k miles. But I did have some home improvement projects going on which means lots of trips to Home Depot. That 12 mile round trip, some of which is freeway, is not enough to get the engine up to temperature. I think this is the reason for the 2% fuel content.
I don't think it was doing more regens during the second 5K but now I have a notepad in the truck and I'm trying to note the miles for each regen to get an idea. Easy to miss them though; I wish that notice would stay put till you acknowledge it just like all the rest of them. What's wrong with that idea? Sometimes I really cannot understand what these designers were thinking when they made certain choices.
Anyway, here it is and we'll see what it looks like at 15K regarding fuel content.
Senior User
Joined: Jan 2011
Posts: 133
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From: Washington, IL
AlexWV,
Numbers look good. I question the Iron and Copper as typically these are higher first change or two with iron from break-in and copper from cooler leaching/seasoning.
The wear metals are analyzed with Atomic Absorption and will tell you what is wearing and when to proactively fix.
I like having the infrared analysis results to tell me Soot, Oxidation, Nitration as these I can use trending wise to tell me if my oil change period is adequate given the conditions I operate in and what loads I am applying to my truck engine. By trending I mean plot these values from one sample to the next and you will start to see how many hours or miles before the oil's usefullness is depleted. For a diesel the keys are soot and oxidation. For a gaseous the nitration tends to be the indicator.
Per Caterpillar reports I never want to see my oil soot above 60-80% the oxidation seldom rises unless you reall run high loads/temps. After 80% oil life tends to deplete quickly (the oxidation curve hooks up). On my 2004 Duramax I never saw above 20-25% soot at 7-8,000 miles.
fyi...
Brian
Numbers look good. I question the Iron and Copper as typically these are higher first change or two with iron from break-in and copper from cooler leaching/seasoning.
The wear metals are analyzed with Atomic Absorption and will tell you what is wearing and when to proactively fix.
I like having the infrared analysis results to tell me Soot, Oxidation, Nitration as these I can use trending wise to tell me if my oil change period is adequate given the conditions I operate in and what loads I am applying to my truck engine. By trending I mean plot these values from one sample to the next and you will start to see how many hours or miles before the oil's usefullness is depleted. For a diesel the keys are soot and oxidation. For a gaseous the nitration tends to be the indicator.
Per Caterpillar reports I never want to see my oil soot above 60-80% the oxidation seldom rises unless you reall run high loads/temps. After 80% oil life tends to deplete quickly (the oxidation curve hooks up). On my 2004 Duramax I never saw above 20-25% soot at 7-8,000 miles.
fyi...
Brian
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Senior User
Joined: Oct 2010
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From: Sunshine Coast, BC
I reset the oil minder both times I changed but now I think about it, next time I'll just leave it to see when it will say the change should happen.
Brian: good info, thanks!
Lead Driver
Joined: Jan 2010
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Received my report this afternoon.
2.5% fuel for 5,656 miles down from the prior change reporting 3.0% at 5,181 miles on the oil.
Aluminum increased to 18 from 17.
This was also with 6 1/2 hrs of 1,400 RPM high idle, 40% of that time most likely related to allowing regens to complete.
2.5% fuel for 5,656 miles down from the prior change reporting 3.0% at 5,181 miles on the oil.
Aluminum increased to 18 from 17.
This was also with 6 1/2 hrs of 1,400 RPM high idle, 40% of that time most likely related to allowing regens to complete.
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Senior User
Joined: Oct 2010
Posts: 266
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From: Sunshine Coast, BC
Received my report this afternoon.
2.5% fuel for 5,656 miles down from the prior change reporting 3.0% at 5,181 miles on the oil.
Aluminum increased to 18 from 17.
This was also with 6 1/2 hrs of 1,400 RPM high idle, 40% of that time most likely related to allowing regens to complete.
2.5% fuel for 5,656 miles down from the prior change reporting 3.0% at 5,181 miles on the oil.
Aluminum increased to 18 from 17.
This was also with 6 1/2 hrs of 1,400 RPM high idle, 40% of that time most likely related to allowing regens to complete.
Your's and mine are close enough to the same in fuel % and aluminum. Don't know what that means, though. We could both be equally farked or it is just normal for these trucks.
You should post your whole report up and then maybe one of the mods can start collecting them into the tech folder. Epic has previously put up a couple of his as well. Would be interesting to be able to look at them all but it's hard to find them once the disappear off the front page.
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