10000 - 15000 km OCI shouldn't be difficult with a fully synthetic 0W30 in typical Asian engines, I suppose.

https://www.bobistheoilguy.com/forums/ubbth...30?#Post4741200

This 7000 km blotter of Perodua SS 5W30 SM gold bottle looks good to me.
Yes, blotter spot test has its limitations. Hence I try to be consistent using the same type of paper, with the same 'steps' of making an oil drop, wait for 48/72 hours to take pictures ..... under similar lighting conditions if possible.

This post has been edited by zeng: Apr 30 2018, 09:05 PM

Bitog on Honda Full Synthetic 0W30 from Malaysia

This 8000 km Perodua SS 5W30 SM oil doesn't look spent, as there isn't an obvious clear centre ring, indicating oil dispersancy property is still strong.

This post has been edited by zeng: May 15 2018, 04:41 PM

Hi Bro,
at 4322 km , this Bardahl MXP FS 5W40 shows very light grey in 'outer' zones as there is absence of centre zone.
Outermost zones indicates certain fuel dilution or regular cold short trips.
Good serviceable used oil still with a lot of life in it, I suppose.
I personally won't replace this oil anytime soon though.

This post has been edited by zeng: Jun 2 2018, 10:17 AM

Hi Bro,
In relation to the previous 3000 km blotter, this 4000 km blotter stronger colour in dark yellowish with a bit of dark greying in the centre/diffusion zones ....... indicating current oil has higher level than before of dirt,contaminants etc which is normal phenomenon as oil is in use longer time.

This 4000 km HMGO oil sample is more coloured or more yellowish, and appears weaker then most other samples of equivalent km ....... may mean that engine condition may not be as clean , say for example caused by prolonged short trip operation. It may not indicate poor quality of HMGO per se as any blotter spot we are reading is a result of:
a)other than quality of engine oil in use;
b)clean/dirty internal condition of engine and its ignition system; and
c)how a vehicle is operated as frequent short trips vs 200-300 km outstation trips once a while etc.

Before magnifying/enlarging picture, the blotter shows a faint shape of centre zone area, but there is no clear sharp coloured perimeter ring(or line or annulus) yet .... indicating this 4000 km oil is still good to use.

How centre zone area and how centre perimeter ring/annulus develops is what we want to pay special attention to, for it shows various stages of the on-set of dispersancy breakdown (which is not the case with this 4000 km yet), going on to the complete breakdown of dispersancy (which all of us doesn't want to reach that stage for engine protection).

At the end of the day, I'm not really recommending you Aisin over HGMO yet but it's good to compare with blotter spot tests as a tool ...... vis-a-vis methods like using gut-feeling speculation preference talk etc.

This post has been edited by zeng: Jun 8 2018, 09:05 AM

-delete-

This post has been edited by zeng: Jun 8 2018, 09:04 AM

Hi Elite,

This Mobil Delvac MX 15W40 (can you confirm please?) blotter generally has 3 zones namely:
a)Quite a large area of (elongated) centre zone that is surrounded by a faint shape of grey-coloured perimeter ring:-
This centre zone is very mildly grey or dark coloured indicating quite a small/mild amount of contaminants like soots, combustion by-products, dirt etc
The engine combustion system seems good to me.

b)Relatively small area of intermediate 'diffusion' zone indicating additional capacity to absord more contaminants from the system if any;and

c)Relatively large area of outer-most (fuel dilution) zone indicating a large amount of low viscosity light density oil (gasoline fuel in this case) are being spread outwards, away from the centre zone. It also means a higher level of fuel dilution in this blotter spot test.

Is this fuel dilution severe ? Well, compared to other blotter spot samples here, it's more serious or extensive.
However looking at its contaminant levels in centre and intermediate zones, I would interpret the fuel dilution as not detrimental to the continuing service of this oil sample at 740 km 20 hour track time.
By the way, what's OEM recommendation on oil change interval in km or hour track time ?

The virgin KV100C of this Delvac MX 15W40 is 15.5 cSt, and it may have dropped by as much as up to 20% as a result of fuel dilution. However the blotter spot indicates acceptable level of contaminants (with capacity to absorb more contaminants) , hence personally I won't be replacing this used oil.

Heck, I have zero experience on motorcycle oil thing btw.

This post has been edited by zeng: Jun 18 2018, 03:03 PM

Hi chemistry,
This 48 hr blotter spot has a very large centre zone , but without a clear ,dark-coloured perimeter ring around the centre zone (which is a good news) indicating a very potent or strong dispersancy (and detergency) capability typical of a modern HDEO diesel oil.
Btw, this PC Duron SHP 15W40 is a semi-synthetic HDEO with ultra high specifications in CK4,E9, ECF-3, other than dual rated SN.
The rather grey colour of the centre zone indicates quite an amount of combustion by-products and contaminants etc in this 11,145 km used oil sample from a carburrettor old tech engine.
The intermediate diffusion zone is good and clear.
However, I find it interesting for being unable to 'see' the outermost transparent zone surrounding the jagged edges, indicating near zero fuel dilution despite your claim of 90% stop & go traffic condition.
It appears to me this engine is very well maintained.
This used oil sample appears to be serviceable for probably another 1500-3000 km , IMHO or speculation.

Engine oil :Shell Helix Ultra 5W40
Car make: Avanza 1.3 K3VE
Oil mileage: 5575 km
Engine total mileage : 267,960 km
Driving condition: 50% stop-go , 50% hiway
48 hr blotter spot.

Absence of centre zone perimeter ring, yep it looks good and 10000 km blotter spot should be coming soon.

Giant 1-day Promo :Shell Helix Ultra Fully Synthetic 5W40 at RM 84.44/4L.



Note:With powerful OEM specs,


This post has been edited by zeng: Aug 11 2018, 06:06 PM

West Malaysia, I suppose.
Maybe others can testify so ......

10099 km blotter spot, Helix Ultra 5W40


...... and going ....

This post has been edited by zeng: Aug 15 2018, 03:22 PM

Ooops .......... thousand apologies ...
Ok, will respond in due course.

Btw, on API certifications/licensings of engine oils or the lack of it....
https://www.bobistheoilguy.com/forums/ubbth...gti#Post4917373

Hmm cempedaklife ...... the centre zone perimeter ring appears very obvious, doesn't look good for its detergency/dispersancy.
I thought Honda 0W30 could do much better than that.
It could be due to cold temperature when doing sampling.
Next tests try do it hot, after say 20 minutes of 20 km run.
Check with previous posts from this thread, there was one Aisin oil type very impressive blotter spot test. Try use that particular one if you are going for Aisin.

This post has been edited by zeng: Nov 8 2018, 12:34 AM

Just before pouring this oil, you did throttle cleaning ?



Edit: Your June 8 post saying sample was taken after 15 min from pasar, not this sample ?

This post has been edited by zeng: Nov 8 2018, 12:50 AM

For high mileage engine, should be preferable to go thicker, more so when there is minor oil leaks.
Besides, 5W40 is most likely fully synthetic oils, where as a 5W30 could be just mineral oil, or semi syn, although there is also fully synthetic depending which particular oil type.

Aahh ....may be the remnants of dirty stuff after the throttle cleaning has gone into this oil sample.IDK.
If this is the case, may be we can't 'blame' the Honda 0W30.
Btw, if you are still using this oil sample (meaning haven't change this oil sample yet ), may be can take another blotter spot test after another 2000 -4000 km and see how the oil performs ?