I know the best engine oil is fully synthetic engine oil . But , it's too expensive . I wanna try good semi synthetic oil . Which is good ? 20w40 ? 20w50 ? 10w30 ? my car is old proton saga . I need to drive the car long distance ( from kl to johor) , so i need to maintain the car in good condition) .

10w40 eni/agip awesome semi-synth

Your engine oil budget?

Mine settle with tesco offer, usually fully synthetic 5w-40 shell helix at rm139.

Got also Total brand, similar price.

around rm 100

Tesco semi synthetic 10w40 4litres is selling for less than rm60 atm. Fully synthetic less than rm100. Tesco Semi synthetic should easily last for at least 6000km before oil change is needed.

so 10w40 is the best semi-synthetic oil ? i would prefer more good brands rather than "Tesco" . Any suggestion?
My uncle told me that he just changed Hi-Rev 7240 10w40 for his car which cost thim rm100 . Is it worth ? Is the oil good ?

the lower the number , the higher is the quality of the oil ?

no..... thats not how it works.... to go into the details, there is a thread all about oils (i think its pinned)

and just be careful, many 'fake' oils out there~

*also, tesco oil is said to be pretty decent, its a saga, not one of those highly strung engines, not necessary to use those extremely good oils for it*

No. 10w40 is not the best semi synthetic. When using non fully synthetic oil, you will want lower viscosity range, for example 15w40. Reason being the higher the rage, the more additive VI are added.

Anyway, I can't comment on hi Rev. Never use that. When come to semi synthetic I do recommend aisin 10w30 but I believe saga need something more than 30.

the number in front or behind represent the viscosity number ? i read the pinned post , but dont really understand ...

Before this i use petronas syntium but recently change to aeon fully synthetic.

Quite lighter when rev and engine a little bit quiet.

This post has been edited by magnesium: Aug 21 2016, 12:12 AM

Both numbers tell you the viscosity. To make things easier, and since we don't have feezing cold weather, we should look at the number at behind, for example 40 for your car.

It's not what you want but rather what the car manual said what the car should have. Totally different thing.

A super expensive oil that the car manual didn't say you can use can spell trouble.

dont use too thin oil for old 4 cylinder engine.newer&modern car oklah.

the lower the number behind the higher is the quality of the oil ?

Which engine oil you recommend?

Tesco's semi sync on offer at $60 is sufficient. For an old Saga, anything more is just a waste of money, it does absolutely nothing for the engine! Have been using this oil on my 10year old Myvi for years,hasn't missed a beat!

My old 2006 Myvi Just put Tesco fully & cerratec, oli change every 8 months for 12k km. Engine very smooth & can feel the power but only driving around 120-140kmh. Next 3 oil change without cerratec. If semi I prefer Magnatec

tesco fully synthetic around rm100 ? is tesco fully synthetic up to par with the other brand fully synthetic ?

what is the number of the oil ? 10w30 ?