QUOTE(zeng @ Oct 24 2021, 09:05 AM)
Hi Bro,
As suggested by e-lite above, this Elantra 2.0L NA seems to be very well taken care of with a superb 12.6k kms clean blotter spot.
There is absence of greyed centre zone which is light coloured and transparent indicating very low levels of large-sized dirts or high density/heavy metal wear dirts at 12.6k kms usage.
There is also absence of emergent darkened aureole zone/perimeter in normal blotter, although the second picture with lighted background light has 'exposed' the hidden and emerging aureole zone/perimeter ring which is lightly darkened. This indicates agglomeration of combustion byproducts is very mild and light at 12.6k kms usage .
The Diffusion zone is light coloured and transparent indicating presence of very low levels of fine-sized contaminants and dirts indicating superb residual detergency and dispersancy oil properties.
The jagged zigzag edge at the outermost zone has emerged in shape but they are not really darkened , yet (unlike my 12k km blotters in general) indicating very low levels of oil oxidation and/or moisture content which I consider as harmless.
Besides it may indicate your engine may be quite free of varnish. No, I'm not refering to sludge.
Whilst it is hard to identify translucent halo outside the outermost zone, the second blotter with backlight has 'exposed' beyond doubt its presence, indicating presence of 'undesirable' fuel dilution phenomenon but remains harmless for now imo.
Overall, I believe this 12.6k SHU 5W40 is still in good working condition and is fit for continuing use for thousands of kms to come, more so in this well maintained Elantra 2.0L NA.
Just my 2 sen.
Edit: The undarkened emergent jagged zigzag edge at the outermost zone may indicate very preliminary and light levels of oil oxidation phenomenon meaning its residual anti-oxidant property is superb and intact imho.
Thanks Zeng for the analysis. Can't continue to use that oil anymore coz already drained it out As suggested by e-lite above, this Elantra 2.0L NA seems to be very well taken care of with a superb 12.6k kms clean blotter spot.
There is absence of greyed centre zone which is light coloured and transparent indicating very low levels of large-sized dirts or high density/heavy metal wear dirts at 12.6k kms usage.
There is also absence of emergent darkened aureole zone/perimeter in normal blotter, although the second picture with lighted background light has 'exposed' the hidden and emerging aureole zone/perimeter ring which is lightly darkened. This indicates agglomeration of combustion byproducts is very mild and light at 12.6k kms usage .
The Diffusion zone is light coloured and transparent indicating presence of very low levels of fine-sized contaminants and dirts indicating superb residual detergency and dispersancy oil properties.
The jagged zigzag edge at the outermost zone has emerged in shape but they are not really darkened , yet (unlike my 12k km blotters in general) indicating very low levels of oil oxidation and/or moisture content which I consider as harmless.
Besides it may indicate your engine may be quite free of varnish. No, I'm not refering to sludge.
Whilst it is hard to identify translucent halo outside the outermost zone, the second blotter with backlight has 'exposed' beyond doubt its presence, indicating presence of 'undesirable' fuel dilution phenomenon but remains harmless for now imo.
Overall, I believe this 12.6k SHU 5W40 is still in good working condition and is fit for continuing use for thousands of kms to come, more so in this well maintained Elantra 2.0L NA.
Just my 2 sen.
Edit: The undarkened emergent jagged zigzag edge at the outermost zone may indicate very preliminary and light levels of oil oxidation phenomenon meaning its residual anti-oxidant property is superb and intact imho.
I think this should clear doubts over the authenticity of SHU stocks sold/selling in Giant hypermarts. Which will also mean more people will compete to buy and less chance for us to get.
Oct 24 2021, 01:15 PM

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