Using 0w40 in a car that asks for 0w30?

[jtay2024]

Hi all!

It's coming up to my sisters service on her 1.0 Peugeot 108. It has a little 3 cylinder engine with a timing chain and standard port injection.

If I put her number plate in on "what oil for my car" websites they almost always come up with 0w30, with them sometimes suggesting 10w-40 as an "alternative".

It's a pretty basic engine. It has a catalytic converter etc, but it's not turbo or fancy injection etc.

I can get a very good deal on a 4l bottle of Castrol Edge 0w40 at the moment with the A3/B4 ACEA rating on it. I think it'll be fine but I just want a second opinion? It's coming up to summer and I see there being no issue with a slightly thicker oil.

Anyone else thing this would be okay oil?

Thanks!

 

[Jetronic]

that's a toyota 3 cylinder engine. we ran 5w-40 total quartz 9000 in those back in the day.

 

[Titan]

It will be fine.

 

[Hohn]

Hi all!

It's coming up to my sisters service on her 1.0 Peugeot 108. It has a little 3 cylinder engine with a timing chain and standard port injection.

If I put her number plate in on "what oil for my car" websites they almost always come up with 0w30, with them sometimes suggesting 10w-40 as an "alternative".

It's a pretty basic engine. It has a catalytic converter etc, but it's not turbo or fancy injection etc.

I can get a very good deal on a 4l bottle of Castrol Edge 0w40 at the moment with the A3/B4 ACEA rating on it. I think it'll be fine but I just want a second opinion? It's coming up to summer and I see there being no issue with a slightly thicker oil.

Anyone else thing this would be okay oil?

Thanks!

it will be just fine.

The difference between grades is often small compared to the difference within grade.

KV100 of 9.3? That's a 30 grade
KV100 of 12.4? That's *also* a 30 grade
KV100 of 12.5? Now that's a 40 grade.

But so is a KV100 of 16.2!

 

[jtay2024]

Thanks all!

 

[Falcon_LS]

Go for it!

 

[demarpaint]

No worries, go for it.

 

[Bailes1992]

I run the cheapest ACEA A3/B4 I can put my hands on in my Sister In Law's Toyota Aygo with the same engine.

In fact, I think the last two fills have been with Tesco 15w40 which I picked up for £5/5 litres in a sale a few years back.

 

[Kira]

jtay2024: Tell us your sis' Peugeot is a manual and I'd bet you could pick up the jealousy vibes with a transistor radio.
What year, what mileage? asking for a friend

 

[Bailes1992]

jtay2024: Tell us your sis' Peugeot is a manual and I'd bet you could pick up the jealousy vibes with a transistor radio.
What year, what mileage? asking for a friend

Nearly all the Toyota Aygo's, Citroen C1's and Peugeot 108's are manuals over here. Great little cars they are too! Had one of my most enjoyable cross country dashes ever in my Wife's old 2015 Citroen C1 back in 2016. Could thrash the living daylights out of it without really worrying about travelling too fast to corner or loosing my licence.

 

[JavierH19]

Most euro 30's i've seen are 12-12.5 cst and castrol edge which there are 4 of for the uk go up to as high as 16.1 kv100 for the R and Rn 17 rsa 0w-40. There are 7 types of 0w-30 as well.

Which castrol do you have. If it's the ll-01 or ll-04 ones they're 13.3 kv100. That would only be about 6.5-10% thicker so that's nothing.

https://www.castrol.com/en_gb/united-kingdom/home/products/our-brands/viscosity-grades/0w-40.html

 

[Kira]

Had one of my most enjoyable cross country dashes ever in

Drove all over Sweden and Norway in a Subaru Justy.
I don't recall how large the 3 cyl. engine it was. It may have been Toyota sourced.

 

[Bailes1992]

Drove all over Sweden and Norway in a Subaru Justy.
I don't recall how large the 3 cyl. engine it was. It may have been Toyota sourced.

I think the older Subaru Justy was a Suzuki Swift but with four wheel drive. I remember looking at them as an option for a different to the norm first car back in 2010. I was a bit sad when I realised they weren't flat fours. I do love the sound of a flat four with a set on unequal length headers!

 

[jtay2024]

jtay2024: Tell us your sis' Peugeot is a manual and I'd bet you could pick up the jealousy vibes with a transistor radio.
What year, what mileage? asking for a friend

It's a manual yeah. Tiny little thing. Got 36,000 miles on it currently. Was owned by a little old lady before and kept in a garage all its life. First thing I predict will need doing is the clutch.

 

[jtay2024]

I managed to find a very good deal on a Castrol Magnatec C3 5w30 in the end. Local shop to me as well which was convenient so I went with that.

Sounds like they are pretty unbothered cars though so it's good to know I can likely pair it up with my 0w40 that I buy for my old Peugeot 306 as well. Might be cheaper buying one of those big 20l boxes you can get if I use it for both cars.

 

[Falcon_LS]

Out of curiosity, where was the Castrol blended/bottled? Seeing "Gasoline" on an EU market product got me curious, when they usually label it "Petrol" instead.