Hi Chemistry,
Wow , fuel dilution seems indetectable this time round compared to previous 9771 blot which is good news with this carburrettor engine .
Yes, the shade of gray colour diffusion zone is slightly darker than before but it remains harmless IMO , because of the absence of darkened and opaque centre zone and absence of darkened perimeter ring .
Generally the contaminants (though slightly higher than 9771 km) has not coagulated into insolubles or semi-solubles and it is well dispersed .
Slight moisture is present , which does not render this used oil unfit .
IMO, this semi synthetic Mannol is still serviceable at 11000 km for further use .

thanks bro @zeng for evaluation. I'm glad to know how far this Mannol Diesel Extra can go.
By the way, I think it's about time to drain before this CNY.
p/s: the oil has been in service since Sep-2018

Yeah, it's very hectic close to CNY .
I had done 8000 - 10000 km with Petronas CI4 15W40 in Wira .
Notice the hugh capability of this Mannol HDEO in its detergency and dispersancy property in this 11000 km blot spot , in relation to PCMO's generally .

This post has been edited by zeng: Jan 1 2020, 12:14 PM

Checking engine oil condition using Blotter Spot Test method

Russian website English translation .

This post has been edited by zeng: Jan 2 2020, 10:52 AM

Honda City GM2 year 2009
Current Odo : 119,979km
Date: 15/01/2020
Blotter time : 8am (picture after 36hrs)
oil age : 10,094km
Engine oil used :Shell Helix HX8 X 5w30

Wow, clean and transparent blotter at 10094 km with complete absence of shade of grey colour in the centre zone, the perimeter ring and clean and yellowish diffusion zones .
Another achievement is the seeming absence of signs of water moisture , which I consider as exceptional after having gone through numerous blotter spots .
Personally, I would carry on with this oil up to a minimum of 15000 km , probably more .

Thanks Bro Zeng for the details
Will try to drag untill 12k then will post again the results
So far oil level no changes
But performance wise that acceleration quite draggy

Performance at 10000 km becomes quite draggy , despise potential drop in operating viscosity due to breakdown of Viscosity Index Improvers VII aka viscosity-shearing ?

Am I surprise here ? Not quite really , to the extent you could 'feel' the difference ,if any .

Has this 10000 km gone bad ? Maybe , as compared to virgin new .

Is this 10000 km used oil too 'old' and no longer provide components protection,detrimental mechanically and hence unfit for continuing service ?

I don't think so . In the absence of 'expensive and messy' Used Oil Analysis , your 10000 km blotter spot suggests it is fit for additional thousand(s) of km IMHO , never mind the fact that you may have exceeded the 10000 km OCI (?? ,IDK) recommended by OEM .

Note:
This HX8 X 5W30 contains some Molybdenum additive whose Coefficient of Friction in application potentially increases with use in your context .
Hence your 'feeling' of being draggy ?

This post has been edited by zeng: Aug 27 2021, 08:17 PM

Wow hx8 so nice. Value for money!

Note that hx8 x and hx8 is different

To support my contention above , attached below is a chart demonstrating the phenomenon of
increasing engine Coefficient of Friction,
with decreasing ppm(parts per million) of Molybdenum additive ...
in a typical engine oil application which likely applies to this application of HX8 5W30 of voa Molybdenum 39 ppm .



This post has been edited by zeng: Jan 20 2020, 10:39 AM

repost here.

daikor zeng, tolong...

which one better? I want to get to for my next engine oil test.

hx8 x better i guess. i no expect.
but hx8 is only SL spec.

Any promo currently at hypermarkets fot hx8 x? Want to get 2 bottles.

hypermarkets only have hx8 la
but i dunno got promo or not now. nowadays the promo always run together with shell helix ultra 5w40.
same price punya.

Sure , your pleasure .

The Centre Zone of about say, 8 mm has not heavily darkened and became opaque, hence it has not formed yet from the agglomeration and coagulation of combustion products .

The Perimeter Ring of about say, 10 mm annulus ring surrounding the Centre Zone has not formed or visible with darkened colour.

Both the above shows no trace of agglomeration and coagulation of combustion products in this Urania LS mid-SaPS HDEO at 5000 km .

The complete circle of Outer Diameter 20 mm of light grayish colour indicating quite an even distribution of all the dirts and contaminants of combustion .

Exterior to the above 20 mm OD circle shows light yellow colour and looking transparent, indicating very low level of contaminants and dirts in the used oil .

Overall, this blotter spot indicates the detergency and dispersancy properties of this 5000 km used oil is still in tip top condition . IMHO it is still serviceable for another several thousands of km .

Btw, this mid-SaPS Petronas Urania LS 15W40 has a very powerful specs in CJ4/ E9 etc .



Note:May I know the (petrol) engine type in use here and its current odometer readings ?

This post has been edited by zeng: Feb 17 2020, 05:01 PM

thanks for reposting here

Engine campro vvt, petronas ron95, current odometer 60k

This post has been edited by OvenBaked: Feb 17 2020, 05:16 PM

Thank you, for your feedback .

This post has been edited by zeng: Feb 17 2020, 10:26 PM

What your comment on normal car using hdeo?
btw i use this car for street race,little modified here and there, sometime redline till rev limit, gearbox manual