QUOTE(ahsam1212 @ Jul 30 2021, 05:28 PM)
Hi bro, sorry for the delayed response ....You are right. It is clean and good.
Centre zone is not grayish or darkened, indicating quite low levels of heavy (metal wear?) or big sized contaminants within this 7500 km blotter sample. This is good news partially.
Just outside of Centre Zone is the aureole zone/ perimeter ring which 'unfortunately' seems to be emerging with slightly darkened shade ring indicating the phenomenon of agglomeration of combustion by-products has begun......though the used oil's detergency and dispersancy property has remained intact and in top shape thus far.
This darkening trend of aureole zone/perimeter ring is something to monitor closely with continuing further use of this 7500 km used Total 10W40 oil, if you so wished which I would.
External to this Aureole zone is the diffussion zone which is very light coloured, clean and transparent, indicating very low levels of contaminants (of lighter mass and density) within and it still carries plentiful detergency/dispersancy reserve capacity of absorbing/attracting additional quantities of 'foreign' materials yet to be released as combustion by-products with further use.
There is absence of darkened jagged external edge outside of Diffussion zone indicating absence of water moisture content within the used oil.
Another good news here is the absence of translucent halo at the outermost zone indicating absence of fuel dilution phenomenon.
In general I believe this 7500 km used oil is still in good shape and fit for continuing use, if one so wishes.
This Inspira engine of yours at 178k kms seems to be in very good shape and well taken care of imho.
Edit: Are you continuing the use of this 7500 kms Total oil?
This post has been edited by zeng: Aug 2 2021, 10:24 AM
Aug 2 2021, 09:59 AM


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