QUOTE(ahsam1212 @ Feb 18 2021, 12:33 AM)
Inspira 2.0, 170k km
Oil blotter is 10.3k km. Should be 3 days old, or more as I forgot about it.
SHU 5w-40. Bought from. Local hypermarket, T o H, can't remember too.
Added about 300ml of Shell Rimula 15w-40 as it needs more than 4L of lube.
Not sure what's the black dots is from the engine, or anything under my driver seat. I placed the blotter paper there.
Will try another blotter to verify before oil change.
What do u think about this image?

Hi Bro,
Not sure which particular black dots you are refering to , but it appears on the upper half of the blotter spot there are like 3 unbroken lines (or is it 2 ?) that were 'touching' supports from below the paper placements during the duration of dispersion of oil deposits/spots ...........
which is something to be avoided for 'perfection' but no harm in a way .
There is absence of darkened centre zone and it is transparent , which is good news .
The aureole zone/perimeter ring is very vaguely/mildly darkened and is hard to identidy .....,
which is good news too .
Overall , there is no agglomeration of combustion by products or commencement of breakdown of detergency/dispersancy properties of this 10.3k km shu 5W40 used oil .
Not sure if the 300 ml of HDEO Rimula 15W40 has made any contribution to the above blotter with its stronger detergency/dispersancy properties in typical HDEO .
The diffussion zone is clean and light coloured , indicating quite low level of contaminants .
External jagged edge is only very vaguely and slightly darkened indicating lower levels of water moisture contamination for this 10.3k km used oil, but water moisture there is .
No signs of translucent halo at the outermost zone indicating fuel dilution phenomenon is absent , probably from your appropriate pattern of running this Inspira 2.0L around town .
IMHO, this cocktail of SHU 5W40 with 300 ml of Rimula 15W40 at 10.3k km mileage is still serviceable and good to go , if you're comfortable about extending it .
This post has been edited by zeng: Feb 18 2021, 11:38 AM