Delvac 1 5/40 high oxidation
- Thread starter MARTNT
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Most likely due to esters in the oil.
I am currently running Delvac 1 SHC 5W40 and have 20K mi on the oil, estimate there will be 28K on it when I get home to change it. 29.6L sump, 2.5L every 6250mi makeup, 6.4L engine.
Charlie
I am currently running Delvac 1 SHC 5W40 and have 20K mi on the oil, estimate there will be 28K on it when I get home to change it. 29.6L sump, 2.5L every 6250mi makeup, 6.4L engine.
Charlie
At 200 miles that's almost a VOA, so its almost certainly a characteristic of the oil, essentially an artefact.
If you could get hold of a VOA that'd confirm.
You could try posting a query on their website. I havn't found them very responsive, but your query is probably of more (commercial) interest.
If you could get hold of a VOA that'd confirm.
You could try posting a query on their website. I havn't found them very responsive, but your query is probably of more (commercial) interest.
Yes, one should ideally have a VOA from the same lab.
Originally Posted By: Garak
Yes, one should ideally have a VOA from the same lab.
I need to speak to the lab really, I gave them a Virgin sample this time as well and they said I still had a high oxidation level on my used samples even when they had taken the reference oil away from it.
I need to see if they have an actual oxidation level for the Virgin sample because I seem to have a high reading originally at my 200 mile anaysis.
I have read before that there Estas based oils can give strange readings.
Yes, one should ideally have a VOA from the same lab.
I need to speak to the lab really, I gave them a Virgin sample this time as well and they said I still had a high oxidation level on my used samples even when they had taken the reference oil away from it.
I need to see if they have an actual oxidation level for the Virgin sample because I seem to have a high reading originally at my 200 mile anaysis.
I have read before that there Estas based oils can give strange readings.
your silicon is awfully high for such low mileage, usually indicating poor air filtration - unless it is from antifoaming ingredients, which should show up as Si in a VOA. My last UOA at 17.5K miles showed only 3ppm with the SHC.
Charlie
Charlie
Yes, it would be best to discuss with them, then. They really didn't give an adequate explanation about how they took the reference oil away.
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