Thanks for the write up on turbo bearing oil leaks.

OK.. Here's go my blotter spot test.
Kenari standard 1L engine. Mileage 133k.
Current oil mileage is about 6k km, with perodua 5w-30 semi synthetic, gold bottle.
Black centre ring is obvious, but oil is not that dirty yet.
Any 5w-30 budget oil that has good performance to intro?


Attached thumbnail(s)

You're right ahsam,the oil is not that dirty yet.
If I may add this used oil is still serviceable and has some reasonable life from now on.

Agree with you its black centre ring is visible or obvious ......
and this indicates dispersancy property of this oil at some 6000 km usage ,begins to 'breakdown' ..........
and that's perfectly normal in a used oil sample like yours and it's not the end of the world or due for oil condemnation.

Do note the centre zone(or area) within the 'black' centre (perimeter,circumferrential) ring is transparent and light coloured ..... and that's good news as it's not opaque and dark(or black) coloured......
indicating oil dispersancy is still performing as intended/designed and hence serviceable.

I wouldn't say this Perodua 5W30 semisyn doesn't have good performance ..... yet, and it seems to be doing ok as of now.

If you haven't dumped the oil, do another blotter spot test some 2000 km down the road, and evaluate from there.IMHO.

This post has been edited by zeng: Apr 7 2018, 09:03 AM

Will be using this oil for another 2k km. Normally I run it about 8k+ before oil change. Let's wait n see the result then. BTW, the photo was taken after about 26 hours. Will do again in another 1k km.
Thanks Zeng for your comment.

Only found this useful thread!!!

Any sifu here twach me?

Toyota Vios NCP 42, Engine: 1NZ-FE



Petronas Synthium 800. Change every 5000km.

Do I need to post 24 hours? 72 hours?

Image attached is 12 hours

You're most welcome.
Btw, is this Perodua SN or SM?

Glad that you find this thread useful.
Post #1 has some links for reading, and blotter spot pictures for comparison.
This Syntium 800 10W40 has quite a strong specs,


The blotter would 'mature' at 48 hours or more, and may provide more consistent evaluation, IMHO.
Upload one when you have it for general comments, if you may.

This post has been edited by zeng: Apr 7 2018, 09:46 PM

Hmm... so meaning, I take another picture of 48 hours only can comment?

This is SM stated on bottle sticker. And oil comes from Petronas.

Thart's right, a 48/72 hour blotter would look 'different' from a 12 hour one .


Thanks.

Dear TS,

This is the 48 hours.



Will post a 72 hour tomorrow... Comments?

Oops, this 48 hr blotter spot picture doesn't show any 'shape' of centre zone indicating the oils dispersancy capability is like new.
The blotter is bright coloured and not greyish/darkish indicating there isn't much of contaminants or dirt ... pointing to an internally very clean engine.
The picture resolution doesn't show a 'whitish ring' at the outermost diameter of blotter, so couldn't say there is fuel dilution.

I would expect a 72 hr shows no differrence from this 48 hr blotter , though.

Dumping this oil at 5000 km usage appears too early in my opinion.

This post has been edited by zeng: Apr 9 2018, 02:56 PM

6,000km
Mercedes GLC250
5 months since last change



Attached thumbnail(s)

For better viewing, light then back of the sample using you hand phone light , much much cleaner view

Engine oil details?


Good idea from you,

This post has been edited by zeng: Apr 10 2018, 04:53 PM

Petronas Syntium 3000, 5w30

thrown the blotted paper away...........

Petronas 5W30 comes in Syntium 800 being a blend with SN GF5 .....

...which sounds unsuitable for your MB GLC 250.

Do you mean to say Syntium 3000 fullsyn 5W40 SN C3 MB 229.31?




This post has been edited by zeng: Apr 12 2018, 05:29 PM

For advocates of 5000 km (3000 miles) engine oil change intervals ....
https://www.bobistheoilguy.com/forums/ubbth...al_#Post4725400

72 hour blot of my Aisin 5W30, Hyundai G4GB Engine.

Current oil mileage 14,990 km.

This 14990 km blotter spot doesn't show up any sign of centre ring or centre zone, indicating detergency and dispersancy capability of the oil is still intact like new, and hence continuing serviceability.

The outer zone is not grey or dark coloured , indicating there is minimal contaminants or 'rubbish' within the oil.

I'm really impressed with the performance of this Aisin 5W30 oil in your Hyundai engine and I would personnally further extend the OCI beyond this mileage .

This post has been edited by zeng: Apr 22 2018, 03:06 PM