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Discussion Starter #1
Just got the results back from my engine oil analysis and it came back with a bit of excess water (coolant checked and it is a little low), soot, coarse and fine iron and a little aluminium bith above acceptable levels.
EGR failure would probably account for water and soot but I'm at a loss as to the iron and aluminium. Any suggestions??
The oil after checking with the manufacturer, is almost to new spec in all other aspects except it is a bit thicker after 13,000 km.
John
 

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I've absolutely no idea but could it be rings (Fe) and block (Al) ??? Tolerances too high or oil spec?
 

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Just got the results back from my engine oil analysis and it came back with a bit of excess water (coolant checked and it is a little low), soot, coarse and fine iron and a little aluminium bith above acceptable levels.
EGR failure would probably account for water and soot but I'm at a loss as to the iron and aluminium. Any suggestions??
The oil after checking with the manufacturer, is almost to new spec in all other aspects except it is a bit thicker after 13,000 km.
John
hey john can you post the analysis document?


regards
Drag
 

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I've absolutely no idea but could it be rings (Fe) and block (Al) ??? Tolerances too high or oil spec?
The V10 is notorious for camshaft wear. That's iron. Many of us have switched to 5-40 weight oil in an effort to minimize cam wear.
 

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Discussion Starter #5
Attached is the test result. Very unlikely Al will be from bore as it is plasma sprayed and is designed to last 500,000 km with normal wear. The oil (Synforce Platinum) has the highest or at least one of the highest shear strengths of any on the market so cam lobe because of oil weakness also unlikely. Nothing is impossible but some things are just very unlikely.
John
 

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Attached is the test result. Very unlikely Al will be from bore as it is plasma sprayed and is designed to last 500,000 km with normal wear. The oil (Synforce Platinum) has the highest or at least one of the highest shear strengths of any on the market so cam lobe because of oil weakness also unlikely. Nothing is impossible but some things are just very unlikely.
John
Hey John
For the oil do you mean Valvoline Synpower?
As for the sample high iron is one concern but the backup story is the high PQ count which is the larger iron particle floating around in the oil.
These most likely come from the burrs that are formed on the edges of the cam lobes as they wear. The aluminium I don't believe is a concern as most V10 oil samples have higher aluminium ( maybe because the whole engine is alloy?)
How did you take the oil sample? as method is very important to see what is really floating around in your engine!
I found that the best is if you have a fumoto oil valve you can do a good drive to warm it all up then stop and drain off about 5-6 litres before you sample the flow that way you don't get the crap sitting in the btm of the sump.

The soot is a bit concerning also.
Water is rated at 0.00% the sample specs but 0.05% in the comments?
Is your thermostat working correctly?

regards
Drag
 

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Hey John
For the oil do you mean Valvoline Synpower?
As for the sample high iron is one concern but the backup story is the high PQ count which is the larger iron particle floating around in the oil.
These most likely come from the burrs that are formed on the edges of the cam lobes as they wear. The aluminium I don't believe is a concern as most V10 oil samples have higher aluminium ( maybe because the whole engine is alloy?)
How did you take the oil sample? as method is very important to see what is really floating around in your engine!
I found that the best is if you have a fumoto oil valve you can do a good drive to warm it all up then stop and drain off about 5-6 litres before you sample the flow that way you don't get the crap sitting in the btm of the sump.

The soot is a bit concerning also.
Water is rated at 0.00% the sample specs but 0.05% in the comments?
Is your thermostat working correctly?

regards
Drag

I correct myself the water is listed in the Physical tests section also but not listed in the infrared section but on questioning the Techenomics guy local it seems they don't test for water in the infra red section unless asked and at extra cost.

You need to trend it after another 3-5k John

regards
Drag
 

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EGR failure would probably account for water and soot but I'm at a loss as to the iron and aluminium. Any suggestions??
Try asking the tester, they'd probably have an idea of what's causing it.
I would have thought they would have commented in the notes.

Maybe the water and soot is from short trips?
 

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Discussion Starter #9
Hi Drag, no don't touch Valvoline with a 10 ft barge pole unless it's used in some old clunker. Synforce Platinum 530 as previously stated. They are a small specialised blender based in Qld with top of the line products. Previous test had everything well within tolerances (Al at 6 ppm, Fe slightly up at 103 ppmbut I don't know where about in oil drop it was sampled as I asked the dealer to do it. This time it was using the supplied sample collecting kit through the dip stick which does provide the possibility of picking up crud from a very small part of the sump I suppose. Driving pattern hasn't really changed. Water temp steady as a rock. Interesting there is no Glycol but maybe too small to measure as it should be about 30% of the coolant. John
 
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