Engine oil Mobil or Castrol

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.

About $22 for 5 Qts. of Castrol (you can buy it on Amazon or at Walmart for a decent price). Filter is about $4.00 or more if you buy a premium filter.

What brand oil are you using? I noticed a decrease in consumption with Mobil 1 and stuck with it.

Mobil one..yes they make ac delco oil, but the additive package is a little better with m1 vs Delco.

Mobil 1 hands down. There's better but not as consistent for the price.

I’ve been using Mobil 1 in all of my vehicles and other equipment for 20+ years, never had a problem with it at all.

I typically use whatever is cheapest and proven oils for all my cars. I have an '08 2.5 and have been using T6 5w40, they typically run coupons for them for $20 or 25.00 for the gallon jug. No, it doesn't get VW's official stamp of approval but it seems to do pretty well in this application and seems quite popular amongst various other makes especially Euro cars that require a 40wt oil. Quite honestly, I'm pretty sure you can run a quality 5W30 in this motor, it is not anything special. I've run M1 0W-40 and although it has the VW spec labeled on it, my car always had a faint tick coming from the valve cover area (lifter?) when warm. It never did this with the T6 oil in it.

I used 0-40 mobil 1. It turned out pretty bad for me, I ended up using more oil than I ever had before. The car smelled like a friggin chainsaw with that stuff. The engine only had like 100k on it, but the blowby was horrible with 0-40. This was just my experience. I use mobil 10-40 now and no problems so far.