Sampling taken after engine was stopped about 30mind after driven around 40mins

Hi Zeng. Any comments on this oil?

Mazda 3 2.0L Skyactiv
Current Odo : 98k+ km [due in around101,000km]
Date: 18/08/2019
Blotter time : 9am [picture taken 3pm] after approx 6 hours
oil age: last oil change is 91k km [March'19]
Engine oil used: Mobil 1 Extended Performance SN.
Type: 5w-30
Driving condition 60% city 40% highway [sometime highspeed revving.
Fuel used: BHP Ron 95




Can this oil last till my service due? I am a bit worried as most of the member posted is in golden color. Wondering this Mobil 1 ep oil is suitable? Been using 2nd time already.

Hi incredibless,

The gray/darkened colour we see in this 6 hour blotter spot indicates there is presence of soot and combustion byproducts in this used Mobil EP oil, traveling outwards away from the 'centre zone' of about 8 mm diameter size.

With a 48 hour blotter spot later, we would be able to see clearer whether the oil detergency/dispersancy capability has badly deteriorated such that the centre zone is darkened and opague with possibly a dark-coloured perimeter ring surrounding this centre zone. This indicates oil life may be used up and require replacement depending on severity of black spot in the centre zone .

If the centre zone at 48 hour is light yellow/brownish, translucent and not darkened and opague, it indicates the oil dispersancy capability is in top form and likely fit for continuing service.



From Post #1

So it would be nice to wait till the blotter spot 'matures' after 48 hours of drop to better ascertain the 'fitness' of the used oil.

Edit:If I must guess with a quick interim answer, in my experience, this used oil should be good to last until your next scheduled oil change at ODO 101k km.

This post has been edited by zeng: Aug 18 2019, 04:17 PM

I see Zeng. Thank you very much for your good information. I shall wait for another day to complete the 48 hours. Hope it will turn out to be fine

i did another sample yesterday. just before i added seafoam to the engine oil (https://forum.lowyat.net/topic/4692120/)

i will try to get another sample mid of week, then just before i change my engine oil on weekend, and then another sample a few days after change engine oil.
some recommended to do another round of oil change so this is to test it out.

Mobil claims this M 1 EP 5W30 as extended drain interval oil of up to 15000 miles (24000 km).
It is A5B5 and has an OEM approval in General Motors Dexos 1 Gen 2.



It has 0.8% SaPS ,Sulfated Ash Phosphorus and Sulphur content.
Hence I would 'expect' this oil to perform very well, despite of propensity of fuel dilution problem in a Direct Injection Mazda 3.
Anyway, looking forward to you sharing the 'mature' 48 hour blotter sometime later.

This post has been edited by zeng: Aug 19 2019, 08:26 PM

Hi Zeng. Hereby i would like to update on the blotter test of 48 hours for your further analysis.

I noticed that the side has a clear stain of oil film vs the earlier photo i took [which was after 6 hours].

Here are the pictures. Good?

Are you refering to the slightly grayish/darkish 'stain' just outside or external to the (2-3 mm width) Translucent Zone ?

Would very much like to see blotter spots BEFORE and AFTER the seafoam for knowledge/experience sake.

yes the thin 2-3mm after the patch. Overall how is this Mobil 1 5w30 EP oil perform?

I wouldn't have noticed the 'stain' external to the Translucent fuel dilution Zone if you hadn't pointed it out here .

This phenomenon is 'new' and alien to me at the moment and I am unable to explain why, may be somebody here can come out with some explanation on the 'stain' in this used oil blotter spot .

As to the condition of this used Mobil 1 EP 5W30 oil sample at 7000 plus km , I would speculate it is still fit for continuing service as there is absence of centre zone, indicating detergency/dispersancy capabilities of this used oil are still in top form nontheless.



At the same time, the intermediate diffusion zone is transparent, light yellowish colour though there is obvious grayish/darkish soot floating around.

You may want to compare your blotter spot against this 7000 km M1 ESP 5W30 C3 VW 50400/50700 blotter.

Edit: Btw, what type of paper are you using here as it appears quite good quality ?

This post has been edited by zeng: Aug 21 2019, 12:07 AM

My 2 cents only, don't hit me if I'm wrong.

I would say that the stain is good. The oil is doing it's job by bringing insolubles/dirt all the way to the boundary layer edge. If it is poorer condition, the darker areas will be around the center.

Agree with your positions above.

In the event of conflicting 'facts', I'm of the opinion that MB approval listings from MB should prevail with it's periodic updates and consistency/professionalism . It represents an authoritative source.

Unless this HX8 X 5W30 was tested and approved by MB to MB 229.5 approval, it would be inappropriate for Shell Msia to list "MB-approval MB 229.5" on packaging of HX8 X 5W30 in picture as provided by 90Boyz .

Btw, product data sheets of almost all other regional Shell sites indicates HX8 (without X) 5W30 as MB 229.3, as is the case with its 5W40 version . Having said this, no appropriate product data sheet is made available online by Shell Msia thus far.

This post has been edited by zeng: Aug 21 2019, 08:18 PM

API SL intro in 2001 ;

API SM intro in 2004.

Hence SL is definitely suitable for engines released in 2001 or before.

Alternatively, as specified in respective car owner manuals.

Thanks for the clarification.

I guess conclusion of the story is, despite being the same range and branding name, always check the blending plant.

Different plant may have different variation of the same range depending on where it is sold to

speaking on tis..
i bought 3 shell helix ultra from Giant and 3 of them from diff country
germany , italy , turkey

another picture with lights from behind.



This post has been edited by cempedaklife: Sep 4 2019, 04:33 PM

+1

If one looks hard enough, after-seafoam sample (8109 km usage) may be a bit darker than that of before-seafoam blotter spot (7989 km usage) but it could be placebo effect as you'd differentiated them separately in the notes.

However, I couldn't see the difference on samples with light on at the back, may be the light is too bright eliminating the picture contrast.

On it's own, the after-seafoam sample (8109 km usage) demonstrates normal and acceptable levels of soot/insolubles/dirt whilst absence of clear cut dark centre zone indicates the oil detergency/dispersancy capabilities are still intact and in good shape.

I would speculate this after-seafoam oil sample is still fit for continuing service, taking note that you'd decided to replace the oil in a few days' time.

This post has been edited by zeng: Aug 23 2019, 02:03 PM