0w20 vs 5w30?

>>14434658
Engine engineers are much smarter than some old Grease monkey. I do agree with going with heavier oil when engines get to higher milage but I'd never do the opposite

>>14434669
>I do agree with going with heavier oil when engines get to higher milage but I'd never do the opposite

The Yaris is currently on her 90,000 miles milestone but I recently had it refreshed by replacing her oil crankshaft seals etc.

So you'd reckon it's safer to stick with 5w30?

>tfw, 20w50

>>14434715
Id stick with what the factory manual says to. Even with adding heavier oil it's just based on preference. You should stick with your oem requirement

>>14434658

DO NOT DO IT.

Seriously!

Yaris engines, not that it matters it's a Yaris, are extremely sensitive to oil type.

What a grease monkey thinks should be a proper oil and what the engineers that designed the engine know what is suited is a very big difference.

There are a lot of horror stories similar to yours where people have changed their oils as per grease monkey recommendation and then the cars always inevitably start burning oil like mad.

KEEP USING THE RECOMMENDED OIL TYPE. DO NOT CHANGE OIL TYPE ON AN YARIS.

>>14434669

You only do that as a fix on an engine that is burning oil and with which you don't care or plan on rebuilding.

Oil affects much more things other than piston seals.

>>14434658
depends, where do you live?

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My first car is a Vitz (Yaris)

>be excited to do a fresh oil change with my Dad so I can learn how and look after my car
>mfw the price of 5w30 fully-synthetic

>>14434787

No it does not. If it depended the engineers would have made the car foi a certain world zone leave factory prepared for that and therefore using an recommending a different oil grade. Just like cars are fitted with better cooling for hot zones and better heating for colder zones.

>>14434795

If you can't afford proper oil you can't afford a car. 30€ for 5L isn't expensive.

>>14434807
the hell are you talking about
my manual says 5w30 for warm climates and 0w20 for cold climates

>>14434783
Yes, Ie) usually an older engine. My miata consumed a little bit of oil and had lower oil pressure. I run 5w 40 now because of it.

>>14434658
And why the fuck would you lsiten to him over Toyota? Didn't anyone ever tell you to consider your sources?

Some 5w30 is very close to 0w20 grade already.

Keep using 5w30 or 0w30. It'd run fine on 0w20 but you wouldn't really gain much if anything.

>>14434807
I can afford $9 for 5 quarts of conventional Supertech.

>>14434795
I feel you on those prices man.
I could take my car to a shop and get the oil changed for $30 bucks, but instead I buy the oil and filter myself (ends up being $30) and then do it myself because I don't trust dirty oil shops.

>>14434807

I'm happy to pay for it, it was just a shock on top of buying the car.

It was $90NZD for 5L

Are you stupid?

Engineers defined two oil grades for different climates. Period. Why have grease monkeys to come and think they know better and recommend different things?

Cars leave factory pre-prepared for a certain zone.

>>14434822

Then you can't afford a car.

>>14434837

Look around. I buy my oil online for those 30€ mentioned. The same oil at a parts store goes for the double at least.

>yeah whatever, killing the busines, etc

I don't care. I refuse to be jewed.

Is there much difference between different brands of oil? Mobil, Castrol etc.

>>14434850
Buy Pennzoil

Shell is leading the oil game

Ive got a volvo with a t5 in it


whats the best oil?

>>14434850
Not really, just make sure they have the same service spec as the manual requires.

>>14434658
if it says 5w30, go with that. lighter than normal oil in smaller high mileage engines is more likely to leak, burn and cause problems with the VVT

>source: me am kia tech and we have customers ask us that all the time when our entire fleet takes 5w20/30 because "muh gas mileage"

>>14434862

Refer to your user manual.

>>14434822
Get off the road.

>>14434847
>can't afford a car.
But I can and it drives just fine.

>>14434878
what is this shit i see about "german" or "european" oil formulas?

Are they actually different from the shit i would buy at walmart?

>>14434940
No

>>14434986
thanks senpai im sure youre an oil expert

i will not overspend for "european" formulas

>>14434940

Slightly only. Maybe some aditives, but the basics are the same.

>>14435004

>senpai

What a fucking faggot.

Not OP but what bad things can happen if I put lower viscosity oil in my engine?

>>14435011
senpai senpai f a m

>>14435045
Lifter tick, increased wear

>>14434817

You realize that pressure is a restriction of flow?

I can't remember which engine but I read of one manufacturer that sent out a notice telling people not to deviate from the recommended because the passage ways will not allow for proper flow of thicker oils. On older engines the oil channels stay the same.

kek
why?
5w30 has a larger gap
stick with it he doesn't even have a reasony behind it does he other than muh experience
>>14434807
kek

oil viscosity and type of oil actually very much matter in different climatezones.

Because it has to do with stresses and how these small motors can not handle the thick pudding known as motor oil.

Change to 0w20
>faster warm ups
>increased mpg by 1-2
>less burning issues because of the less stress

>>14435488
5w30 is fine m8
you are acting like it's some gear oil for construction-machines

>>14435502
>some gear oil for construction-machines

For higher torqued cars and diesels? Doesnt make a difference but something like the 1NZ?

> 141 Nm (103 lb·ft) of torque at 4200 rpm

Do you know how much friction that causes for these tiny motors to move at highway speeds? Its like adding some performance modification without doing anything

>>14435488

And then the warm weather comes, the oil degrades like butter in a pan and "why there", says op, "my car is burning oil like a whore swallowing semen".

Stick to the motherfucking oil it has been using.

>>14435541
>And then the warm weather comes

Remember that part of friction? Guess what? The internal components are stresses less even at higher temps

> burning oil like a whore swallowing semen

Thats a problem with 5w30/40 blends on smaller motors because of the extra inefficiency.

You gain mpgs from switching oil!

>>14434658
I think the Yaris VVT works on oil pressure, why would you want to play with the oil viscosity?

>>14435402
I'm going to take a guess and say it was Chrysler who issued that notice

>>14435557

But the oil doesn't the higher temperatures the same way.

Stop speaking out of your ass because you're just babbling nonsense.

I'm going to call it now, I think that tech lied to op in order to drum up business when his engine inevitably fucks up from using the wrong oil.

Stick to the factory recommendations and everything will be fine

>>14435574
Do you ignore how friction even works? Its the equivalent of someone walking through water and syrup

Same sort of nonsense was said about the switch to synthetic blends...

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>>14435574
>But the oil doesn't the higher temperatures the same way

>>14435597
http://www.truckinginfo.com/article/story/2009/09/research-shows-oil-viscosity-affects-fuel-economy.aspx

I think the tech has a bit more knowledge than the majority of /o/

Always use the oil recommended by the manufacturer. Period. Unless your engine is making lifter noise that a heavier oil might lessen. But if you have that, fix it and stop being a poorfag.

>>14435615
Yeah and take whatever pills your doctor gives you, drink the water in Flint, and buy the extended warranty.

>>14435601

Fucking idiot. The problem isn't viscosity. The problem is the 0w20 doesn't take higher temperatures as well as a 5w30. And how the engines are made to get to temperature as fast as possible nowadays the 5w30 is the best oil for that engine.

Hence the fucking reason it came with in inside from factory.

>>14435642
>Lifter noise

I think you should be worried about something else

>>14435643
>extended warranty
>Believing in this shit

It's not my fault you live in some casual world

>>14435658
>0w20 doesn't take higher temperatures as well as a 5w30.

Why would the oil need to deal with higher temperature tolerances? Even though they are made for them?

>engines are made to get to temperature as fast

Viscosity differences can improve that

>>14434658
Trust the manufacturer.

They built the damn thing.

>>14435573

It was map for sure.

I want to say that it had to do with the miats, but I can't be 100%

>>14435615
>I think the tech has a bit more knowledge than the majority of /o/
I think the engineers have much more knowledge than that one stupid mechanics and anyone on here.

>>14434658
>ctrl+F
>hydraulic
>0 results
New engines rely on oil for more than just lubrication. Oil viscosity has been tested on these engines in all types of conditions to ensure they function in safe zones. If your engine is burning oil try a high mileage blend with modifiers that soak into gaskets and seals; they have your viscosity.
Sure, you can change it and everything will seem fine, but what's so fucking hard about knowing exactly what you need and getting it. God I hate this board sometimes

>>14435557
>have small engine
>turns high rpm because no cubes, no torque so must compensate with top end
>use thinner oil, muh race
>engine spins freely
>them revs
>oil is actually foaming
>windage in oil sump
>actually losing HP
>bearings getting shit on
Wew lad

>>14435402
And I still want proper pressure... if I have less than adequate pressure in the system my oil is going to do less as it won't get to where it's supposed to. Either way what I'm doing if perfectly fine and so is running the specified oil

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>>14434658
ok guys actual Toyota/Lexus tech here.
here is the truth. your motor was designed for 5w oil. toyota switched over to 0w20 pretty much across the board about 4 years ago. according to toyota 0w20 is safe to use, and even recommended as long as you use genuine toyota oil. your vvt-i will not know any difference, oil change intervals will remain unchanged, but you can see slightly better mpg.
FYI yes there is a difference in toyota 0w20 oil, as it has been formulated for all toyota engines using 5w30 and lower.

>>14434813
>>14434807
>>14434847
the internal temperature of your engine has ZERO to with the outside temperatures, a truck towing a trailer up a hill in zero degrees will get the oil hotter than a car cruising down the highway in 90 degree weather

>>14434940
drastically different!! ACEA ratings are what you should be education yourself on
API ratings are inaccurate

>>14438113
Finally!! someone who actually knows what he is talking about!

>>14438113

why does every big toyota I've ever had to drive have A/C issues while the driver's side front window jumps the fucking track without fail

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Posting the best oil.

>>14434743
Harley rider spotted

>>14438113
So you are saying that 0w20 is better than 5w30 for the 1NZ-FE?

>>14436753
>modifiers that soak into gaskets and seals
This claim has always been bullshit and always will be.

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>>14438195
>the internal temperature of your engine has ZERO to with the outside temperatures

>>14434658
Ayy you big pleb. The manual recommends 0w20, says you can use 5w30 but should always swap it for 0w20 when you get the chance. Page 454/423.

>>14434669
>>14434715
>>14434757
>>14434773
>>14434795
>>14434813

The manual says 0w20.