Engine oil OEM Subaru or PETRONAS

No issues with 5w-30. Switched my 21 Crosstrek to it due to the summer months coming. Little dip in mpg but the engine runs smoother.

Either way I have the impression that the engine has a smoother sound and feel now, can this be possibile or it's just a placebo ?

They sell Subaru branded Idemitsu at the parts counter

Petronas Selenia 5w30 é o único que eu usei no meu carro até hoje, trocando de 5 em 5 mil km. É o que está no manual do carro. 66mil km até hoje (10 anos de carro, rodo pouco) e não tenho nada o que falar, cumpre o papel.

I changed from Petronas Synthium 3000 to this and I can assure there was obv improvement in smoothness especially when going above 110km/h.

Petronas is a pure virgin oil.

Great for UAE road and climate.

I personally use Petronas oil or petromin oil.

Great performance and good mileage getting.

As a 2015 Abarth 595 owner here in the UK I tried Petronas Syntec and have to say the little fella seemed to like it.

Oil being dark is a good indicator that you have to do an oil change. However, you shouldn't wait until it changes color to do it. Clear oil doesn't necessarily mean you can keep going.

0w20 provides your engine with more wear protection .

There is minimal difference between 0w16 and 0w20, with 0w20 provided marginally better wear protection and 0w16 providing slightly better fuel efficiency since it's slightly thinner and provides less internal resistance.

I avoid the 5 minute drive-thru places. One of them wanted over $100 for full synthetic on my Subaru Forester. Not worth the 5 minutes.