Hi Zeng,

Kindly comment on the above oil. Taken after 15mins of drive. Picture was taken 24 hrs after oil was dripped on A4 paper.

Oil: Zic x7 Fully Synthetic 5w-30
Age of oil: 8 months
Oil Mileage: 4500kms
Engine Mileage: 84000km
Vehicle: Nissan Latio C11 1.6L 2009
Driving condition: 95% short distance city driving. Usually 15min/drive.

How long can it last? And is the oil condition still serviceble? Thanks in advance

Hi Yuare ,

This 4500 km Zic X7 5W30 blotter has a light coloured and transparent centre zone (of about 8 mm diameter on real sample) indicating quite low level of large size or high density metal wear particles /combustion dirt .

The aureole zone /perimeter ring is slightly darkened and being very obvious which ,I am a bit concern on this .

It indicates signs of agglomeration of contaminants/dirts which you may want to monitor further such that it does not become further darkened and opaque . At the moment I suspect this is caused by 95% short distance cold running of the engine , hence internet suggests it shortens oil life theoretically .

The Diffusion zone is very light gray and transparent indicating quite low levels of contanminants .

There is no signs of water moisture presence but this 4500 km blotter seems to indicate a mild level of fuel dilution which may be explained by the rather low mileage of 4500 km over 8 months duration of operation .

Overall , I would say this Zic oil blotter at 4500 km is still in good and serviceable condition with plenty of life left .

You may want to take another blotter sample after 2000-3000 km or 4 month later and move from there .

By the way for a full synthetic oil , what is your typical oil change intervals so far ?

Prior to learning about this oil blot test, I was doing 1 yearly interval change which equate to about 7000kms. Then, I was not happy about the really dark oil (just general inspection of oil on tissue paper after cleaning the dipstick). I then switched to half yearly oil change for my fully synthetic no matter what the mileage was.

The above oil was after 3 rounds of half yearly oil change interval.

Thank you so much for the interpretation bro

In this case ,you may collect the next blotter sample at around 6500 km or 11.5 months for purpose of evaluation of used oil conditions and its continuing serviceability then .

This post has been edited by zeng: Nov 20 2020, 06:53 AM

Attached is the Product Data Sheet of this Zic X7 5W30 ,



I found pdf TBN of 7.95 for a SN plus like X7 is abit on the low side where most other SN (without plus) that I came across has a TBN or 9 - 9.3 .

This lower TBN would supposedly shortens the oil change intervals/ longevity of engine oils vs others of higher TBN values of similar Sulfated Ash ( Sa ) content .

It also appears to me its base oil is basically of the VHVI Group III type , probably without or very little of Group IV (PAO) or Group V (Ester etc) base oils .

This post has been edited by zeng: Nov 23 2020, 11:12 AM

Sorry to be off topic..

This Zic, they claim to be like top selling oil from South Korea. However, I am not so sure. Anyone can comment on it is really popular in South Korea and is it even really from South Korea?

I am asking this cause a lot of engine oil brands that sound like Japanese, they register Japanese website and so on to make it like it is from Japan. Actually it is made in Malaysia or don't even have information where it is from.

This post has been edited by abubin: Nov 23 2020, 12:38 PM

Errmmmm , you are not quite off topic here as Zic oil X7 5W30 blotter is being discussed several posts above .

My readings from Russia oil club suggests this Zic oil is South Korean and seems to be quite popular in Russia .

Zic oil is also brought up in Bitog though not so much on German oil club .

Approval listings of European OEM MB 229.51 does include 3 Zic brand models , which I would deduce Zic as of a reputable oil company in the international market in Europe as well as North America .

The same cannot be said of the numerous locally available 'Japanese' engine oils though and I concur with your position here .


Edit : I am adding to Post #1 here that , other than matters related to used engine oil change intervals and Blotter Spot Tests , this thread welcomes questions on Used Oil Analyses (UOA's) and vehicle Wheel Alignment since I do not create separate threads on 1 ) UOA's and 2 ) Wheel Alignments on lowyat .

This post has been edited by zeng: Aug 25 2021, 01:18 PM

Zic is under SK, one of the largest conglomerates in South Korea. They are definitely a legitimate company. I have no idea about their lubricant's quality though.

If I'm not mistaken, from what I've come across, the SN plus TBN are generally lower than SN only oils. The newer oils (SN plus, dexos 2) have lower TBN. Correct me if I'm wrong.

Yes, I do not expect them to include any Group IV or V in this x7. It won't be that affordable anymore.

One of the reasons I chose this brand is because it is relatively less popular in Malaysia and the chance of you getting a fake oil online is much lower. So far, I have bought a few which all comes with proper seal and additional plastic Zic wrap over the bottle cap. I have doubts buying popular brands online as there are various news in the past stating that unscrupulous people repackaged recycle oils into branded oil bottles.

Zeng, do you mind sharing how and where you get your engine oil from?

Interesting about SN plus generally having lower TBN than non-plus SN .

IIRC , both API SN plus and SN specification limits on SaPS are the same at < 1.0 percent .

Yes, you are right in suggesting Dexos 2 oils generally have lower TBN but this is due to the fact Dexos 2 is a mid-SaPS oil complying with ACEA C3 performance spec whereas typical SN plus/SN specs are not mid-SaPS .

I suppose you meant to say SN plus generally has Dexos 1 GEN 2 specs , a spec which this Zic X7 5W30 is claiming ?

Btw, for similar price point , take a look at a semi-synthetic Shell HX7 5W30 which has rather strong additive package and certain amount of higher grade GTL base oil , a base oil Zic X7 doesn't have .

Having said that , I am of the opinion that this Zic X7 is beyond doubt a reasonably good oil . Personally I have no qualms in attempting 12,000 - 15,000 km oci with this Zic X7 to be followed with blotter spot tests for assessments .

My source of engine oils ?

Ohhh....... most of them were from online purchases from Tesco .........years ago .

They are all branded big names like Shell/Castrol/Mobil/Total etc carrying ACEA specs and Euro OEM approvals like MB, VW etc for thicker oil film thickness and extended oci .

In a way , I would consider this Zic oil as branded too though not popular , yet over here ?

This post has been edited by zeng: Nov 26 2020, 09:52 AM

Its almost impossible to price a 100% ester/PAOoil at sub rm100 price bracket. Let me give you a rough figure on the pricing. PAO and Ester base cost almost 3-4 times more expensive than a regular group 3 base oil.

To be fair, Aisin did not claim 100% pao+ester base oil. So one should not assume that as well. If you look at full ester based oil, price goes well above RM250. So what you pay is what you get.

Actually does 100% PAO engine oil exist in market?

Really tough. I only manage to come across 1.

https://www.lazada.com.my/products/kixx-pao...lBrUUM&search=1

On the bottle, it says Fully PAO la

i think no... but Penrite seems to claim 100% (or is it 100% full synthetic je? lol)
https://www.penriteoil.com.au/knowledge-cen...engine-oils/454

out of curiosity, looks like the claim is real
https://www.penriteoil.com.au/assets/msds/1...01.0%200318.pdf
>80% are the chemical based base oil (no petroleum)
rest are esters/(not base oil, zinc based) and additives to make up the rest of the composition

This post has been edited by Quazacolt: Nov 26 2020, 11:17 PM

What's the difference between 100% PAO and 100% ester?

PAO polyalphaolefin base oils have negative characteristics such as the tendency to shrink seals and trouble dissolving common oil additives , i.e additives solubility problems .

They are commonly blended or combined with organic ester and/or petroleum synthetic base oils to provide a blended base oil that does not have these negative characteristics.

There may be engine oils claiming or advertising as 100% PAO , but these oil formulations cannot be totally free of ester or petroleum synthetic oils IMHO .

Just my 2 sen .

PAO Explained , Machinery Lubrication .





This post has been edited by zeng: Nov 27 2020, 07:41 PM

Kixx PAO 1 0W30 SN CF ( 100% Synthetic)

Material Safety Data Sheet MSDS as below :



Item 1 PAO base oil ( 68 - 79% ) ;

Item 2 , a kind of ester ? IDK .

Item 3 , ZDDP anti-wear ;

Item 4 , Additive package (15 - 25% )




This post has been edited by zeng: Nov 29 2020, 10:43 PM

Mobil 1 New Life 0W40 (Tesco) MB229.5
Oil Life : 19,160 km
14 months oil life thus far .
ODO :312,990 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

48 hour blotters ,





Absence of darkened and opaque centre zone .

Absence of darkened aureole zone / perimeter ring indicating no agglomeration of contaminants , yet .

Diffusion zone darker than before , indicating increased levels of dirt/contaminants/combustion by-products but appears harmless for now .

Darkened jagged external edge indicates presence of moisture in used oil , which is supposed to aggravate corrosion wear .

But centre zone/aureole zone, perimeter ring and diffusion zone do not indicate alarming levels of wear/dirt/contaminants caused by moisture corrossion .

Fuel dilution seems to be absent from blotter sample .

and ....... going , for now .

This post has been edited by zeng: Dec 1 2020, 01:19 PM

The difference is :
100% PAO base oil formulation must have some ester or petroleum synthetic base for additive solubility .
100% ester base oil formulation may NOT have some PAO or petroleum synthetic base .

This post has been edited by zeng: Dec 2 2020, 10:20 AM