Engine oil Castrol or IDEMITSU

Castrol Edge is usually cheaper than Mobil 1 and will be as good.

Can use 5w30 or 5w40.

0w40 or 5w40 will give you slightly better engine protection if you drive at high rpms more often.

I wouldn't use anything cheaper or different than those two really. You don't need more expensive oils than those either.

Castrol edge is just fine, even the cheapest one is likely better than whatever was good 20 years ago.

295,000 miles using Castrol GTX high mileage and fram XG filter

I have a 17 grand touring and I use idemitsu 0w/20 and purolator b9ss filters.

Michigan I use 0w20 Castrol Edge all year.

As long as you're not getting cheap gas station brand oil, you'll be fine. I've been using Castrol Edge 5w40.

Mate, just get Castrol Magnatec 5w30 full synthetic and change it every 8000km or 1 year, don't fall for snake oil propoganda

I use Castrol EDGE 5W-30 LL Fully Synthetic Engine Oil on my B48 pre LCI G21 no issues at all and complies with BMW specifications

Al producătorului, Mobil1 sau Ravenol în general. E ok și Castrol doar că în experiența mea se înnegrește mai repede și trebuie schimbat mai repede pentru o funcționare lină a motorului.

cu cat l am folosit mai mult am ajuns la concluzia ca castrol e un gunoi, cel putin pt motorul meu si am trecut la uleiul original ca sa nu le mai incerc pe toate