Whats up guys? Need some advice on engine oil for my car:
- almost 20 years car
- 60k mileage
- very seldom use, yearly maybe 1-2k only now
- jap car
- no plan to sell (personal reasons)

Currently my oil change is based on mileage instead of duration, using semi synthetic oil. Is it better to use fully synthetic for better protection since I seldom use it? Was thinking if fully will be better in the long run, then no harm putting it in.

And any issues if i didn't change the engine oil for 2-3 years since the car hardly move.

MINUMLAH BOLD

old car better goes for semi syntectic or mineral oil. mineral oil sticks longer to the engine component than full syntectic. downside is performance are not as great

Wts castrol 15w40 cheap cheap

Start car once every few days to coat the engine is already good enough to protect. No need think so much.

Must use full synthetic then. 5W40. Too thin cannot

If use minerals type sure KO

Nope. Mineral oil will degrade after 6 months.

never own a car age > 7 years...

not able to advice...

I always used fully syn for all my cars . When got leak gasket for my older car when change open head very clear no disgusting crud. On the internals. What this translate is less wear . For older cars standard 5w 40 is good enough but if you want better fuel then 5w 30 my opinion la. 5w 40 give better protection at higher temp and 5w 30 is lighter so engine can move freely. I might be wrong but no harm to try. Downside with 40 is worse FC but better protection and cheaper . 30 is better FC but more expensive and if very hot temp not as great as 40.

Semi synthetic from what I heard if u change frequently 10w 40 every 5k should be ok but I won't la.

This post has been edited by lordgamer3: Jun 8 2025, 04:32 PM

use 5w-30, got money buy valvoline engine oil protect and restore, about rm230. good engine oil
start the car every few days

doesnt mean much if the car were seldom use.
i asked mechanic before i have 4 years old engine oil, should i use it? he say yeah you should, dont waste.
i think got youtube video test old engine oil that was stored in container vs fresh one, very little different in performance
but engine oil in the engine is already exposed to air everything, but yeah still better than well used oil with high millage on it.

My 20+ year old manual Kelisa on Full synthetic. Changes based on mileage (but atleast 1 time per year even my old timer mechanic say no need).

So far so good. Every year still my kawan neighbours ask me want to sell or not.
To be honest, when my everyday car masuk workshop, the kelisa really come in handy 😂

in reality most people that change oil less frequent have great used millage on the oil. last time i did oil change on my seldom use car, the mechanic literally want that oil to use on his car lel, still very yellow.

we are not sultan johor can tukar minyak every month lel. 1 year interval is totally fine for for seldom used car.

This post has been edited by zerorating: Jun 8 2025, 04:51 PM

The longest I had go is 18 months with fully syn oil. Mileage 3k per year. Just so drag another 6 months. Drive every week once or twice.

Gunalah bold engine oil!

Use fully synthetic la. Because semi synthetic meaning very lax...1% fully + 99 mineral also can considered as semi synthetic.

Change oil every 1 year or every 8k if using fully la, because oil also can oxidize if left too long even if very low mileage.

Use ori fully synthetic oil je. Cheap cheap. My bold engine oil fully only rm50 for 4L. Cheap yo.

but manufacturer said, manufacturer said.
of course la manufacturer give a safe quote. a person that said he seldom use his car can clock at 10000km millage in 6 month. yes addictive in engine oil might wear off, but its the oil that do the most when it come to the protection, not the addictive.

Yes but I dont feel any difference whether or not I had oil change. On my company car, yes, I can feel the difference after 7k or so mileage but on my wife car, cant feel any difference with just 3k mileage.

simple, dirty oil have sludges and sendiments that change the engine oil properties. making its lubricant capabilities less effective over time.

60k KM is nothing lah, low mileage
use back the same grade of oil only
any seal that's broken, just change those instead

Using 20 year old plotong
Meant to use 20w-50 mineral

Currently using cheapest fully syn 5w40 (bold atas)
No leaks cos replaced rear main seals/valve cover etc etc

Oil change every 8k km/6 months

EV

While the tered is loading, I expected someone to say Bold

Didn't disappoint

I also can recommend Bold due to their pricing, go for their 5w-40 when got promo at Shopee/Lazada, then just change every 6 months regardless of how much mileage you run in as long as not above 7k.

I put Motion Ester PAO 5W-30 into Wajunk maCampro Cincai Pasang Saja

Point is if you DIY you can do whatever you want because material is cheap as heck compared to go workshop, provided you don't buy fake shits

Check in daily car tered

use fully synthetic.

Yeah. I have an Inspira that I only use for long distance driving. I asked workshop owner that I always go to service do I need to change every 6 months if rarely use. He said no need. 1 year is still okay

Better at least every 6-8mths once as hardly used,oil dries , moisture built up causes heavier wear in internal engine parts.

When u no drive the car, drain out the oil and put it in the fridge, want to use then pour it back into the engine.

is it bad to change from mineral to semi oil?

Pakai olive oil

bold mana bold

I'm also using 5w30 cheap fully synthetic oil for my Proton Gen2, this month reached 13th month, I think mileage still below 10k so haven't change yet

Mine is 60k mileage only, even if it's almost 20 years, should be considered new I think?

I memang start every 1 or 2 weeks, else can't start, lol.

My plan is to use back the same viscosity, but only change from semi to fully. Any idea?

Yup, I memang start once every 1 or 2 weeks max.

Can I know what is your kelisa mileage? And what brand of fully u use and the viscosity?

Memang plan to use same viscosity of oil, but just change from semi to fully. I don't dare deviate from the recommended viscosity in the user manual. So fully will be better in this case? But change duration will be longer as it is 10k vs 7k.

Kasi chan la guys, I know Bold is quite cheap. But the time wasted and the inconvenience quite troublesome, so plan to stick to mileage.

Meaning 1 year must change already regardless reach mileage or not? Did he mentioned what happen if exceed 1 year?

xpe dia guna 1-2k per year then can change every 6/12 month

Go bold la. Bold fully. Change every one year if mileage low. Since it passed testing and not fake oil, shld be no problem.
Be bold.

ok what change every 6 month

use fully syn.

engine condition how? got eat engine oil or not?

It's so cheap.... Just change
I don't think too much about it

Only use it once a week + monthly 1k km trip

Mineral will oxidize, start to have impurities in engine

Fully synthetic, no minerals inside. Change every 3 years so no issue. But that provided you use very less like 1000km per year only.

Start every 3 days and run 5km per trip is recommended to maintain your car health. Especially to protect your car battery, spark plug, radiator fan, brake system and alternator

But for tires don't ever skip. Change every 4 years.

This post has been edited by thkent91: Jun 8 2025, 08:29 PM

just use whatever the book said.

i have a 18 years old toyota with 65k mileage, just use whatever the sc give so far ok.

Waa PAO oil is not cheap.. yamalube and motion also buy their oil from petronas

This post has been edited by kswee: Jun 8 2025, 08:36 PM

Use fully synthetic anyhow. Semi is just not worth it.
You dunno how many % fully synth mixed with mineral oil. Usually at best 17% only.

If your mileage so low. Just do oil change once a year. Do not stretch it to 2~3 years. You wouldn't know whether the engine oil will become too acidic and corrosive or not when soaking many types of metal in your crankcase. There might be chemical reaction.

This post has been edited by k!nex: Jun 8 2025, 08:46 PM

actually fully vs semi for me no difference

since your car is low mileage car, just use semi...more economical that way

Any oil grade as recommended in car manual. Nothing fancy needed.

Hi. My honest advice for engine oil please visit local stesen minyak for 100% original... Never ever purchase them in shopee/lazada unless it is from Mall...and never buy in local spare part shop also

Dont want bold. Not dare to use such brands

Engine perfect, very very good condition and quiet. No eat engine oil. Everytime go service, the workshop praise the condition of engine and ask me want sell or not.

Thanks for the info. Seems like makes sense.

My oil i buy online, either from mall or from other trusted sellers. There are few trusted sellers (besides mall) that are selling genuine oil online.

The motion pao ori? Confirm got pao and ester? Many brands declare got such thing but when check in detail the oil component, no such pao/ester in it.

then use fully syn with viscosity as recommended in manual book.

do not use ester based if u not change engine oil frequently.

i remember got ktard mentioned before, ester based oil absorb more moisture, so it's good for those who change engine oil on time.

No idea. I just bought and use hopefully it's real only. It is hijau instead of usual engine oil colour. And they are bold enough to advertise their product liability insurance which gave me some confidence.

I started using this shit on this neglected Wajunk with 220k mileage which I started driving semi-regularly, so far 230k+ already and I haven't noticed any issue.

I think it served me well for something normally priced in range of RM120-150. I think even if there's no actual ester PAO, it wouldn't wreck your car if you maintain it yearly with this oil. If not just do their normal full syn EO which is even cheaper.

I'm not promoting this brand and not sure if I even helped in your thread. I just prefer this over the somewhat shady Bold. You do you own diligence.

Thanks for the info, well understood.

Aiyo ok ok.

So wat does ester good fr?

I just check bold engine oil from /k recommendations. Macam cheap. Planning to buy

shell helix high mileage

All those brand got difference?

What brand u usijg? What car?

no such thing. my few cars over 15 years old still using fully synthetic. never had engine leaking problem not even at rocker cover.

Shell 5W40 - RM150 one bottle at Shell outlet after discount

Petrol outlet - authentic, authority approval, got chop, got QR code can verify
Tesco, Shopee, Lazada - say original but parallel imported from HK, TH etc unable to verify, cannot scan

Just service with fully few weeks ago

Engine sangat padu, and silent when cruising at above 90kmh

Shell outlet meaning petrol station? How to get those discount?

I use Duckhams only

ze2 remember this legendary eo?

If you guys really wanna buy original Petronas Engine Oil

can buy from official Petronas Shop in Shopee Mall account

RM168.00

PETRONAS Syntium 3000 E 0W-20 Fully Synthetic Engine Oil API SN+ (3.5L)









This post has been edited by JimbeamofNRT: Jun 9 2025, 12:39 AM

3.5l susah. Most cars need 4l. And it's only sn plus

get the proton fully synthetic. it's petronas.

if u dun mind paying extra a bit

MOTUL 8100 Power 5W40 100% Synthetic Ester SP Performance Engine Oil 5L

change at least once per year.

Extra a bit...

What oil u using first.

that if u ask me has more to do with the brand u use instead of the type u used

semi vs fully for me no difference
but petronas synthium HX7 vs liqui moly for me big difference

Original price at Shell station are RM18x, there is shell app voucher discount can tolak RM30 each purchase but need to purchase with the app

Yes, I have used this

At one point I even bought Ace engine oil from Ace hardware. Made in US. 1 quart was like less than rm10. Avoiding all the fake EO frome outside.

like I said

I use Duckhams only

hahahaha my usual mechanic laugh kaw at me when I brought this EO to them last time

My mechanic dem chin kark, he went and sapu and sell to customers doubling the price plus labour.

life is tough eh

0.5 x 8 customers can get 4 liters already

waiting for one waterfish then at least rm100 masuk poket for the free eo

This post has been edited by JimbeamofNRT: Jun 9 2025, 08:27 AM

Then the price increased due to supply and demand.

hi bro, just would like to ask, for older cars which you mentioned here. How old the car (age) is ? 10 years above? 20 years above

Thank you

petrol fume dissolve oil. create acid. eat metal
metal itself wont acid
i jump ship to 3moly liao
cuci sisa kasi clean. change on time must

10+ years. since your mileage low I'd first do a flush then go Synthetic all the way. Some mechanic will say nonsense like Synthetic easier to leak yada yada but if your seals are good should be fine because in general you really don't want the crud to build up . So first get the mech to check your seals for any leaks, do a flush then start using syn. That's what I would do.

Wow, not bad. The 150 u bought is helix ultra?

yes 5W40

Good price wei. Nice. If 5w30 helix ultra, any idea how much is it selling there?

Not sure if they still have the campaign on-going, should visit the shell store after your work

Oh, so it's campaign based

Just use any high quality engine oil you can buy cheaply on the market . Just make sure it is not FAKE oil.

Keywords to look for is ACEA A3/B4. If you can find genuine engine oil that complies with this standard, you should be safe and change it maybe every 2years? Even the plain vanilla API SP standard lubricant in link below was doing fine after 14months, in case you're wondering. But yeah some are of opinion that blotter spot tests are fake. In that case you can always go pay for a proper VOA at labs that offer such service.

Blotter Test Thread

Thanks for the feedback.

From which shop you bought the helix ultra hk?

My uncle used to have a Camry for well over 30... Iirc, he told me he only used 5w30 fully synthetic at every oil change... It was his daily driver, and he would change the oil every 6 months or something... Iirc that car had more than 500k last year before he bought a new car to replace it...

Bukan Bold saja. Asalkan brand ada API certified, insuran. Semua sama je. Mizu, Motion, Trimoly, Vtag, etc. Semua rebrand source sama.

Salah...

Sebab corrosion enjin ialah selepas masa lama dalam enjin, additive minyak enjin alami pengoksidaan. Ini mengurangkan kepekatan minyak enjin. Kalau guna 5w30, selepas setahun, minyak lebih kurang jadi 0w20. Beberapa tahun dalam enjin, weight minyak macam 0w00. Terlalu cair. Kalau kereta simpan saja, kurang pandu, untuk panaskan enjin sekali sekala memang ok. Bagus sebab minyak enjin ringan dapat salut semua part kecil enjin dalam masa singkat. Tapi bila guna untuk pandu lama, minyak tiada protection untuk enjin sebab rating minyak 0w00. Ringan sangat. Minyak bila sentuh memang rasa berminyak tetapi besi enjin perlu kepekatan tinggi.

Sebab itu kalau kereta untuk simpan sahaja, tak perlu tukar minyak enjin. Tapi ingat, bila pandu dengan minyak itu, enjin memang tiada protection. Macam guna minyak rated 0w00. Kalau nak pandu jauh tolong tukar minyak enjin.

This one also use fake advertising. The label there write Ester , but inside only got 1~2% Ester. Although this thing use 70~80% PAO base oil, but shouldn't put the "Ester" label on the bottle. This is also a mid-SAPS oil but still not certified for ACEA C3 standards, only API SP.
Not full SAPS oil that conform to ACEA A3/B4 standards that most older cars use. It is usually specified in the cars user manual.

If you want alot of Ester, then Redline and Ravenol VST is your best option.

This post has been edited by k!nex: Jun 9 2025, 05:38 PM