Originally Posted By: Ohle_Manezzini
The dispersancy is still very good (lack of colored multi targets), but the irregular edges means water or antifreeze content in oil. I'd change for that water or glycol possibility. This Total Quartz semi uses amines as dispersants, the overbased calcium sulfonate mentioned, is just the detergent. You have a low fuel dilution here, since the light and clear outer ring (beyond the irregular edge) is very narrow. Fuel is the clear outer layer, almost indetectable in this sample (it is below average, witch is good, also). You need to check head gasket, or other water source, IMO .
Thank you for your inputs.
Agree with you fuel dilution is low ... in this EFI engine.
On irregular jagged edge, I was concerned too it could be glycol/water related and had been monitoring coolant level and found to be normal and leak free.
Besides numerous blot spots of this Quartz syn blend above 5000 miles exhibiting this phenomenon (below 5000 miles ok), I have another sample of Petronas Syntium 3000 full synthetics 5W40 (C3, SN....... http://www.mymesra.com.my/Passenger_Car_Motor_Oil-@-Syntium_3000_5W-40.aspx) in a N Aspirated Port Injection Optima K5 2.0L without coolant leaks at 6000 miles demonstrating similar irregular jagged edge as well.
Similar irregular edge applies in a Duron XL syn blend HDEO 0W30 CH4 SJ in a Nissan carburreted engine at 6800 miles blot spot locally.
http://www.visalubricantsonline.com/duron%C3%A2%E2%80%9E%C2%A2-heavy-duty-diesel-engine-oils/duron-synthetic-blend-0w30-duron%C3%A2%E2%80%9E%C2%A2-heavy-duty-engine-oils-p-804.html
Does irregular edge encircling the 'centre zone' only reflects coolant leaks and not otherwise ? IDK.
The dispersancy is still very good (lack of colored multi targets), but the irregular edges means water or antifreeze content in oil. I'd change for that water or glycol possibility. This Total Quartz semi uses amines as dispersants, the overbased calcium sulfonate mentioned, is just the detergent. You have a low fuel dilution here, since the light and clear outer ring (beyond the irregular edge) is very narrow. Fuel is the clear outer layer, almost indetectable in this sample (it is below average, witch is good, also). You need to check head gasket, or other water source, IMO .
Thank you for your inputs.
Agree with you fuel dilution is low ... in this EFI engine.
On irregular jagged edge, I was concerned too it could be glycol/water related and had been monitoring coolant level and found to be normal and leak free.
Besides numerous blot spots of this Quartz syn blend above 5000 miles exhibiting this phenomenon (below 5000 miles ok), I have another sample of Petronas Syntium 3000 full synthetics 5W40 (C3, SN....... http://www.mymesra.com.my/Passenger_Car_Motor_Oil-@-Syntium_3000_5W-40.aspx) in a N Aspirated Port Injection Optima K5 2.0L without coolant leaks at 6000 miles demonstrating similar irregular jagged edge as well.
Similar irregular edge applies in a Duron XL syn blend HDEO 0W30 CH4 SJ in a Nissan carburreted engine at 6800 miles blot spot locally.
http://www.visalubricantsonline.com/duron%C3%A2%E2%80%9E%C2%A2-heavy-duty-diesel-engine-oils/duron-synthetic-blend-0w30-duron%C3%A2%E2%80%9E%C2%A2-heavy-duty-engine-oils-p-804.html
Does irregular edge encircling the 'centre zone' only reflects coolant leaks and not otherwise ? IDK.