My 2018 Cultus's fuel average is pathetic (11-11.5 km/L

[pwuser159895957528]

I am having 2018 Suzuki Cultus VXR. Mileage is 77000KM.
The average of my car in city is around 11-11.5 km/l.
I have done general tuning, changed spark plugs, checked ECU (there was no errors).
Can anyone please guide me why is this giving me so low fuel average.
P.S: I change the oil at every 2500KM.

[farhan_khan_h1]

2500KM?
Please do share which engine oil are you using?
Tyres are OEM recommended size?

[pwuser159895957528]

I use PSO Carient Plus 20W-50
And yes the wheels are of OEM size. (165/65R14)

[arslan.v8]

20w50? Sir use the recommended engine oil, you're using the wrong grade.

[pwuser159895957528]

I searched for the oil grade and it says 0W-20 in user manual. But i live in Quetta where the weather is extremely cold in winters. It varies from -10°C to 40°C (in summers).
Is 0W-20 still good for this weather?

[omaruser156370259465]

One of the main reasons why people dont get the desired fuel economy from 660cc/1000cc cars be it Passo, Vitz, Alto or Cultus is that they dont use the appropriate grade of engine oil as per recommended by OEM. Open up your user manual and see which grade is recommended for this engine and also get advice from your nearest dealership and also make sure the oil you're buying isnt fake as nowdays this business is on the rise. 20w50 is way too thick and shouldnt be poured at all, have you used this oil since the beginning when you got the car or just now started using it? When switched to thinner oil, check oil level in morning before cold start.

[farhan_khan_h1]

Sir please go with recommendations, otherwise Suzuki would have printed different manuals for each city
You don't need to change at 2500 as well, go till 5K eyes closed or 6 months, can stretch than that as well but first change viscosity and share the results.

[pwuser159895957528]

No before this like previous 2 oil changes it was normal. Giving 15 with AC in Quetta (you can't go to 3rd gear in city because of everyone rushing).
I don't buy the oil myself. The past times i think the wrong grade oil was given to me.

[pwuser159895957528]

Ok thanks after the next oil change i will give you all update. Can u please tell me what's the difference between mineral, semi-synthetic, and synthetic oil?
What's best?

[shamimcrcr]

Mineral oil is derived from crude oil and undergoes minimal processing. Semi-synthetic oil is a blend of mineral and synthetic base oils, combined with additives. Synthetic oil is engineered from chemically modified ingredients to offer better performance and protection. The best choice depends on your vehicle's needs, budget, and usage. Synthetic oils generally provide superior protection and performance, especially in extreme conditions, but they can be more expensive. Semi-synthetic oils offer a balance between cost and performance, while mineral oils are more economical but may not perform as well in demanding situations

[pwuser159895957528]

Matlab me next time 0W-20 semi-synthetic daalon?
And what's the best company? Shell?

[shamimcrcr]

I will recommed to use oil refered by manual. Small engines have small holes for oil circulation than big engines so thin oil usually used for small engines than big engines but too much thin oil will not creat oil pressure. So always used engine oil recommend by manual. Shell is ok.

[pwuser159895957528]

Semi-synthetic, mineral, and fully synthetic ka to oil circulation pe koi asar ni parta na? Bs sirf quality ka fark hy, right?

[farhan_khan_h1]

[pwuser159895957528]

Thank you so much ️

[arslan.v8]

Go to Suzuki and buy the correct grade oil from them, along with OEM air and oil filters. This is your first step.

[pwuser159895957528]

My fuel average decreased more

[zia1288]

Engine oil alone is not the cause of decreasing and incearsing fuel average. Which grade oil did you use?

[bau787]

did you find any solution and what about long route. i am also having same issue in city(streets).