Best Engine Oil (5W-30) for Toyota Passo ( 1KR-FE)

[khuram2703]

Bhai my 30k driven Passo do not consume oil at Dip stick.... it looks like engine is near to die...... the only thing first is to check " compression ".

If engine rebuid / kabuli option funds are not available than MOTA TAIL for the moment.

In such condition 5W-30 won't work either.

[imrananr]

No comments on use of 0W20 for 1kr-fe engines.

Your cars, and your personal experiences...

Just shared my knowledge with you along some technical reasoning. Rest it's your choice.

[dms664]

No comments on use of 0W20 for 1kr-fe engines.

Your cars, and your personal experiences...

Just shared my knowledge with you along some technical reasoning. Rest it's your choice.

have u used 0w20 in ur car with 1krfe?
just want to ascertain if your statement is based on practical experience or desk studies.

[imrananr]

Brother I am qualified in the field for what I am speaking. Thanks for your understanding.

You look at things how you see and experience them. But you don't know what will happen after 20k or 30k after significant ware and tear has taken place. One big example is already experienced by our brother in above posts.

Again it's your choice. I have given you significant reasoning on use of 0W20 in 1kr-fe engine used in Pakistan.

The only justification you have is that its recommended by manufacturer and that the drive and "Fuel consumption" is best. But what's happening on the wear & tear....?

You dont understand engine design, country specific vehicle manufacturing....
Vehicles sold by Toyota or any other manufacturer have different specifications for same model for different continents. For example, a Toyota built for Saudia or UAE will have differences in cooling systems specifications than same vehicle built for Japan, Pakistan or Canada...
A turbo charged engine and naturally aspirated engines having same model but use different lubricating oils and so on....

The air intake temperature in Japan and Pakistan is different in summers ..

You will require a vehicle with a bigger radiator for more heat desipation if used in desert ....

You fail to understand that the recommended manufacturer oil specification being 0W20 is for Japan from where you have imported the vehicle. Now you are driving this car in Pakistan and not Japan, hence the ENGINE OIL SPECIFICATION HAS TO BE RE-ESTABLISHED AS IT IS NOW BEING DRIVEN IN PAKISTAN WITH DIFFERENT WEATHER CONDITIONS...
Viscosity does not remain constant...it changes with temperature..

[Xulfiqar]

any high quality 0w20 is perfect for 1KR-FE, it starts faster, gives better fuel mileage and has lower evaporation loss than compared to a 5w30 etc.

Im assuming that people are wanting a sunn/silent engine etc etc. which the 1KR-FE is not and cannot ever be. - Using any heavier oil in this engine results in higher wear on the timing chain and also the VVT system.

[imrananr]

I agree on the better fuel consumption and thinner on the start-ups but not on the operating temperatures where the cst for this oil at 100 degrees is around 8.5...
More ware and tear in the long run with high summer temperatures in Pakistan...

I have stated earlier that heavier oils like 10W40 or 20W50 will destroy this engine. So as per my understanding 5W30 is a perfect choice...

[khuram2703]

Although i don't want to but again i have to say that the myth still prevails.... MOTA TAIL FOR HOT CLIMATE....

Brother! The oil sump temperature remains the same due to operating temperatures which makes the oil hot and steady at 80 -100 C in between whether the ambient is 45C or 5C....

There is no question about evaporation as almost all available oils are NOAK tested at 250C above

The later nob 20/30/40/50 represents the viscosity as per engine design ( CLEARANCES OF SHELL BEARING, CARBON / ASH LEVEL BETWEEN VALVE AND VALVE SEAT INSERTS AND DIFFERENT NARROW ORIFACES, CAM SHAFT AND GEAR TRAIN CLEARANCES) whose defination is "RESISTANCE TO FLOW".
If we do self engineering by giving more resistance to flow ( increasing viscosity than recommended) than it means we will increase friction and the result we all know very well what will happen in a shorter period of time.i.e. more wear.

E.g. 2015 onwards Passo Manual only recommends 0W-20 as 0W shows the oil property to with stand and remain in liquid form in cold - temp as we all know and 20 is the resistance to flow required as per engine design at sump temp 80 to 100C which is a constant temperature no matter what ambient temp is....

We have engines running in South Punjab and same running in Alaska and Quebec having same viscosity and carbon / ash level to be maintained universally as per manual.

The only diff is their Radiator / heat exchanger design i.e. cooling system as per ambient conditions.

The thin oils now a days are made from group 2,3,4 base oils with superior additive pack and molecular structure and bonding to with stand and give protection as per engine design.
Failing to follow instructions causes premature failures.....

The perfect choice viscosity is the one which is recommended in the owner manual only.

[Xulfiqar]

More ware and tear in the long run with high summer temperatures in Pakistan...

why do you guys think that Pakistan has a unique operating environment? Are no other places on earth hot?

have you visited west or central africa?

[Xulfiqar]

This is very good info.

but mota haail syndrome never goes away.

[imrananr]

Why go far? What about Middle East?

Do you know what is recommended here?

Do they use 0W20 in Saudia, UAE, Oman?

Very few even use 5W30...bro.

These are facts....not stories...

5W40 is the norm here...

Now don't tell me that they are all crazy...

[Xulfiqar]

I do know that in central and west african countries, new small toyota cars have 0w20 oil They also allow 5w30 oil to be used as its easier and cheaper to procure compared to 0w20.

[Xulfiqar]

There is no question about evaporation as almost all available oils are NOAK tested at 250C above

yes - and on some engines, the clearance of the ring stack to the combustion chamber is very shallow which causes searing temperatures for the scant oil film there, not using the right oil there does lead to gumming the stack (oil drain design etc) - and loss of oil.

[imrananr]

5W30 is motta? Are you nuts..

[imrananr]

Toyota recommends 5W40 for all its vehicles in Gulf...1.3 liters onwards....

Why not 0W20?

Reason is the weather...simple...

[imrananr]

More on recommended oils for different environments:
https://gulfnews.com/business/how-the-right-engine-oil-can-save-you-thousands-of-dirhams-on-repairs-1.1186378

[anon35615524]

The never ending debate and vicious circle has again started, where none agrees to disagree!

[Xulfiqar]

Toyota recommends and fills 0w20 and 0w16 in toyotas in all of usa,

Regardless of state.

Last i checked, the summer of arizona and nevada are hotter than middle east.

Oil viscosity is more than just temperature, its also dependant on design of engine internals like oil pump, lifters, vvt phaser etc. Same reason when you use 10w40 in chevy ls and it promptly suffers from lifter issues.

And when i say toyota im not talking about dumbass franchise dealers, but actual regional techincal reps which are involved when deeper level warranty work is invoked.

[Xulfiqar]

Lol.

So what 5w40? Rotella diesel is 5w40 also, its cst at 100c is 16, mobil 5w40 euro is 13cst...

While all new toyota engines dont need more than 11 cst (including 2ur)

So toyotas advertisement of spending insane money on reducing oil pumping losses to increase economy are useless because some idiot franchises in uae filling whatever cheapest oil they can buy in bulk.

[Xulfiqar]

The temperature delta on toyota cooling systems has been at 50c for decades now, meaning their cooling systems can quench down a running engine even when ambient is 50c

So unless your delta T is somehow less than that (meaning your weather is 75c) then your point is moot.

Btw.

Next time instead of gulfnews, why not look up some whitepapers.

[imrananr]

Bro, in Gulf countries, all the latest model cars each are sold, with Toyota being the biggest brand with highest sales. When you purchase an engine oil from Toyota itself, they never give you 0W16 or 0W20...
What they give is 10W30 and 5W40. Mostly is 5W40. Same goes in the recommendation on the Manual, 10W30 or 5W40...
Now don't tell me we dont have idiot frenchies in USA..

Perhaps I need to take a photo of Toyota recommendation from Manual and share here...
But then, many people have friends and relatives in Gulf State who can confirm if they use 0W16 or 0W20 in Toyota vehicles as like they do in the US.., or Japan or Canada...
Interesting isn't it...humm
Anyways, you have your justifications and I have mine..
Rest let should be the owner himself to decide..either 0W20 or 5W30.
I agree with Basit, a never ending debate.
So finally, Zulfiqar is trying to say here is that weather difference has no role in using a viscous or less viscous lubricating oil...the less viscous the better because of flow properties...

Well, we got some friend here who have ruined there 1kr-fe with extremely high oil consumption after switching to 0W20 and using it for quite some time...

On the other hand, we have friends that are happy with 0W20...but only time will tell how they end up with their engines after clocking 50,000 with this oil..