Engine oil Castrol or Shell

I use Shell Ultra Helix 0W-30 but I mean I drive diesel idk how it looks like for n20 or b48 engines

any oil that meets the LL-01 standard will do, buy whatever is on sale. Castrol Edge Euro 5w30 is fine, Mobil 1 euro synthetic, whatever.

My conclusion was to use the best Castrol in the gold bottle. Of course, YOU must use the specification of weight recommended by the owners manual for the temperature range you expect to be operating in.

The gallon of Castrol is the same whether you buy it at CT or Napa.

Brings me back to my WRX days, we all used to run Rotella T6 because it burned less oil thru our gigantic subaru ring gaps.

I always used Rotella 5w30 gas truck oil designed for “All Mileage” in my 2005 Nissan Frontier with 95k but it’s been discontinued. I really liked this oil as it seemed to be thicker and remained viscous for longer compared to others. My favorite part about it? NO LEAKS!

Personally I always run Castrol and it's done me well, even in older cars that had been a bit battered.

Been using the molygen one, noticed a small reduction of oil consumption and better idling than Castrol (VW recommended)

I use the blue bottle 5w-40 on my 2.5 Mk5 Rabbit.

Runs quieter than when i used Castrol High Mileage.

I'm running Castrol EDGE 0W-40 A3/B4 right now, but feel there is more startup noise than when using Mobil 1 FS 0W-40 European Formula.