Engine oil Castrol or OEM Subaru

5w40 + Canadian winter = NASTY valve tick upon start up. 5w30 cured this. I run 5w30 through the summer and its fine, even on the 30+ degree days. Now if I was in Mexico or southern Texas in the summer, maybe a 40 weight is a good choice.

Doing awesome in single digit F weather.

I put Edge 5w-30 in my 2.0 TSI a few days ago. Drained fresh dealer Syntec 5w-40 to do so. 5w-40 is very thick in cold, which is bad for turbo apps. This is the reason for the evolution of 0w-30 and 0w-40 oils, however 5w-30 synth is thinner than all in the cold, near zero F, about 1/2 as thick as 5w-40. Edge is likely the same formula as the VW spec SLX Pro OE anyway. All the new VW 504 oils ARE 5w-30s, ftr. A consensus is forming around Edge being the best of the thin 30 weight synthetics. It worked great in my friend's 1.8t, at a decent interval. 5w-30 synth is a great choice for winter, and seems fine in hot weather too. Thinner oils simply protect better now because of their improved additives. my engine is running great now

I could not get anywhere 5w-40 Castrol, so I got 5w-30 Castrol Edge, the car seems to perform better than it did before, after changing to this oil.

I'm trying Edge 5w-30 in my 2.0T TSI for a short run this winter. Shouldn't be in long enough to thin from fuel dillution. It seemed to work great in this 1.8t...

From my experience, the 2.0T uses very little oil the first 5000 miles or so, and then starts using about a quart every 2000 miles or so until I change it. Note that I've had the best experience with Mobil1 0w40 and Castrol 5w40. When I use Castrol 0w30 European Blend, it tends to boil off fairly quickly. I haven't tried other oils yet.

OK, then what works for me is Castrol Syntec 0w30 European Car Formula.

i drive a 95 jetta vr6 i currently running mobil 1 10w-40 but i been hearing alot of good things about this new castrol edge thinking about switching to the 5w-40....im hoping i feel a difference

i run 20/50 Castrol year round. it actually reduced the burning and smoking of oil on start up, unlike Mobil 1. i'm glad i switched over.

It seems 15w-40 is the standard diesel weight. I bought Castrol last time because it was on a good promo sale.... 5 quarts and filter for $5 (after rebate).