Sorry , I can't follow what you mean by 'critical stuff' ?
Forget about what Toyota says about 6 months duration change, be it for fullsyn, semisyn or mineral .....
as we don't have cold temperatures or winter seasons.
Toyota's recommendation on 10000 km oil change interval is for fully synthetic.

Now , your brother's car travels 4800 km per year.
I would suggest you use any SN/SM/SL mineral oil for 5000 km or 1 year, and that's being conservative.
If it's my car, I would pick a mineral A3B4 oil for 8000 km or 2 years.
You don't really need fully synthetics or semi synthetic in this low use car.

This post has been edited by zeng: Apr 9 2018, 03:28 PM

Emm did you guys change the oil filter say every 7-10k km in between?

I didn't, because initially I wanted to change at 10k km. But I plan to change oil filter every 7k km in between oil change when I change to new oil (Mobil 1 FS Extended Performance 5w30)

Sorry if I wasnt clear. Basically, in accordance to service interval, they recommend:
- Normal service (every 6 monthly or 10,000km)
Engine oil, engine oil filter

- Medium service (every alternate year, or 30,000 km)
Normal service plus, air filter, cabin filter and brake fluids

- Major service (every 5 years, or 60,000km)
Medium service plus, ATF fluid, Coolant and etc.

Since the Normal service has been extended, how about the others? naturally be extended as well?

Thanks for your input and any others

Or no no ......
I'm addressing strictly about engine oil and it's change intervals of 5000, 10,000 or any other km readings.
Other fluids like coolant/ATF etc and oil/air filters etc should still follow OEM recommendations, though I may have my own criteria in relation to OEM's.

This thread is strictly about assessing used engine oil conditions, and varying it's oil change intervals OCI's accordingly.

Having said this, I do blotter spot test on ATF and varies it's change intervals accordingly, while other OEM recommendations are being considered as well.

Hope , it helps clear up some confusion.

This post has been edited by zeng: Mar 14 2018, 03:43 PM

I didn't follow OEM recommeded change intervals of oil filter typically about 10,000 km ..... strictly.
Basing on oil change convenience, I do replace oil filters after 16,300 km and also 15,000 km of usage matching with engine oil change activity out of convenience.

This post has been edited by zeng: Mar 14 2018, 03:48 PM

Im on mobil 1 EP too and changes filter around 7-10k mark.

I felt a slight improvement after changing the oil filter in between. But yes with mobil 1 EP there's a recommended filter for one shot 20k km use.

Changing oil filter in between oil changes is indeed another way of 'topping up' new oil with additives , thus this practice could 'prolong' OCI if one so wishes it.

Thanks.

Oil change monitor suggesting oil change already, 2 months to go according to date and 4200km to go if following mileage




This post has been edited by rcracer: Mar 17 2018, 03:30 PM


Attached thumbnail(s)

What brand is this engine oil? 😂

Shell helix ultra

Hard to comment without further details like km/month in use;engine model, turbo? direct injection?; engine oil grade/specs etc.

This post has been edited by zeng: Mar 18 2018, 10:42 AM

eo looks clear, but hav to wonder how much sludge-like deposit already accumulating in the crankcase

engine oil (usually) contains detergent to prevent sludge from happening. now wat will happen if the detergent is depleted?

12000km , diesel turbo , helix ultra 10w 30

Edit : more intense light , more than 24 hours

This post has been edited by rcracer: Mar 18 2018, 04:29 PM


Attached thumbnail(s)

Helix Ultra doesn't offer 10W30 in M'sia.
Assuming this is an Euro turbo engine with Diesel Particulate Filter specifying use of this oil etc ......
and further assuming this oil is Shell Helix Ultra ECT C2/C3 0W30, whose typical oil life could be upto 30,000 km in some Euro engines......
..triggering oil change at 12,000 km here, with due respect to whoever is this OEM, I'm of the opinion its oil life monitor is too conservative and I personnaly won't follow it in my car that's without warranty requirements.
This is 'confirmed' with this well done (and lighted) 24 hr blotter spot shown above.JMHO.

This post has been edited by zeng: Mar 19 2018, 11:30 AM

Zeng...... this is Aisin fully synthetic (PAO+Ester) 5w-40 API SN.

Done 12k kms. Used on Elantra 2.0 NA (G4GC). Pic shows 48hrs blot, sample taken hot.

Huuh ........ that's no joke. It's hell lot of clean and transparent, not much of dark coloured contaminants such as soot, dirt, combustion byproducts etc.
It's like my 5000 km oil blotter above.
This oil is powderful, that's for sure.
At the same time , this Hyundai engine is very clean and in tip top condition. How long mileage is this engine, btw?
Any intention of prolonging oil change of existing sump oil ?

Edit: Heck , this is 194k km engine. Two things here:
a) there is no doubt about the capability of this engine oil(Aisin fully synthetic (PAO+Ester) 5w-40 API SN), and
b) this Hyundai engine is hell lot of a clean at 194K km indicating high quality of this engine design and manufacturing , maybe helped by your driving habit and maintenance regime.
Japanese OEMs better buck up, IMHO.

Edit 1:only very faint shape of centre zone, and is fully transparent not opaque.
Edit 2:Sorry, I think this 12,000 km Aisin 5W40 oil blotter is obviously better than my 5000 km Total Quartz 7000 Energy 10W40 A3B4 oil blotter.

This post has been edited by zeng: Mar 28 2018, 03:37 PM

Thanks for the comment, zeng.

Actually this engine is minutely burning oil. I suspect it is due to worn valve stem seals as there is zero oil stains anywhere.

Had to change out the sampled oil right after I did the blot test, as oil level has reached uncomfortably low (for me) and no point to top up. Changed with another 3.5litre of Aisin PAO+Ester.

Previously was on 2x Totachi FS Touring 5W-40 which was on sale in Lazada. Also ran through Kendal GT1 LT 5W-30, M1 0W-40 and Shell Ultra 5W-40. Basically whichever oil I can get on discount (circa RM130-160 range), without breaking the bank.

I bought this car pre-loved, so I have no idea how it fared on previous ownership. Once I got it, in went the SHU and M1 for cleaning. I can only track from its 79k-th km onwards, till now 194k. OCI would vary between 10-14k km and ori Hyundai (Mann manufactured) oil filter.

Aisin FS 5W30 (non-PAO)
Hyundai Elantra 1.8 G4GB
Picture taken 20 hrs after.
Current mileage 13,536 km.



This post has been edited by alphaz: Mar 30 2018, 02:16 PM