QUOTE(zeng @ Aug 19 2021, 09:43 AM)
Mobil 1 New Life 0W40 (Tesco) MB229.5
Oil Life :
11,080 km 8 months oil life .
ODO :325,093 km in
Car model: 2007 Toyota Avanza 1.3L
Engine: K3VE Multi Port Injection
Make up oil added :
Nil, but dipstick level drops a little bit.
Added some 100 mL of graphited engine oil in Elf Molygraphite 15W50 at ODO 323k km 2 months ago.
48 hour blotters,
[attachmentid=10952286]
https://forum.lowyat.net/index.php?act=Atta...ost&id=10952286[attachmentid=10952287]
https://forum.lowyat.net/index.php?act=Atta...ost&id=10952287With additional 2300 ish km travelled, previous evaluation on 2 months ago more or less Still applies in current blotter spot test.
Centre zone is transparent not darkened, absence of darkened aureole zone/perimeter, diffusion zone is transparent, some moisture signs and very very light fuel dilution halo, as like before.
No indication of commencement of agglomeration of dirt particles.
Detergency and Dispersancy properties are still performing as it should.
Imho, this 11,080 km used oil is still fit for continuing service and hence, keep going ..............
Mobil 1 New Life 0W40 (Tesco) MB229.5
Oil Life :
15,229 km11+ months oil life thus far .
ODO :329,242 km in
Car model: Toyota Avanza 1.3L
Engine: K3VE Multi Port Injection
Added some 100 mL of graphited engine oil in Elf Molygraphite 15W50 .
Make up oil added : Nil
Oil level seems to drop by about 300 mL.
96 hour blotters ,
Comments to follow, folks .....Update:
There is absence of very darkened and opaque centre zone of 8-10 mm.
However the centre zone is not light coloured and truly transparent indicating quite a high levels of heavy high-density insolubels and contaminants in this 15,229 km blotter spot.
It is a saving grace that there is absence of darkened aureole zone/perimeter ring indicating absence of undesirable agglomeration/glue'ing of insolubes/contaminants. This means there isn't signs of dirty deposits getting stucked/glue'ed onto contacting internal metal surfaces.
The dispersion zone is generally darkened with rather extensive amounts/quantities of light density insoluble/combustion contaminants.
The darkened jagged external edge indicates quite a high level of oil oxidation/water moisture in this 15,229 km blotter.
There appears to be a possible translucent halo at the outermost zone indicating a certain fuel dilution phenomenon though it is not obvious. With back light, a translucent halo would be much more obvious.
Overall this rather darkened blotter spot doesn't look pleasant and raises the need to caution.
I wouldn't consider running this used oil beyond say, 17000 km and it is time to schedule next oil change at a convenient time.
This post has been edited by zeng: Dec 9 2021, 11:44 AM