Engine oil Castrol or OEM BMW

Depend on the oil grade that is in the engine.

In proper units that’s -15°C which is very close to the limit of a 10W- oil. I would let such car warm for 5 minutes easily.

If your car is running a 5w or 0w it will be fine to start driving in less than a minute. Which is just the time you need to remove the snow and ice from the windows, how convenient :P

I put some Castrol 0w20, no issues.

Castrol mangnetec gave me good performance but in city conditions it gave inconsistent fuel economies for me and under normal cruising speed 80-90 it performed really good. But for me it felt like reaching higher speeds above 100 felt slower compared to shell. Initial pick up of my car felt higher with this oil.

I do in my BMW. Oil is cheap compared to a re and re on a diesel no longer sold in country.

I have a 2012 civic with 220k miles still use Castrol 0w-20. I've been using it since 500 miles switched to the high mileage stuff around 100k

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

Daca e motor de la VW atunci recomandarile mele ar fi Liquimoly Longlife III, Motul 8100 X-Clean+, Mobil 1 ESP.

Reprezentantele folosesc in general Castrol Edge LL. Dar eu nu prea sunt impacat cu brand-ul asta.

I tried Castrol and was not a fan, found it burned faster than any oil I used.