Engine oil Castrol or Shell

Castrol 0W30 (a.k.a. German Castrol :thumbup seemed to shear thin very little over a similar interval, which is why I preferred it.

One of the best oils for your '08 FSI engine... I have used 0-30 Castrol GC, before this one came available. 0-40 Castrol is 100% german Castrol... I have been using it for long time 70K miles 0 issues with engine.....

After using German Castrol on my mkv back in the day my mpgs went up significantly.

A few years back I picked up an S65 engined M3 (E90) after work on a Friday. I hit the 155mph limiter that night, Sunday morning it was doing track duty. In 3 years and 50,000 miles it had 3 oil changes and the 1qt of Castrol Edge TWS I kept in the trunk for top-ups still had some oil in it!

My car uses about 0.5 qts of oil every 5000 miles. I think castrol 5W 40 is the best oil for this car.

I did notice the German Castrol had a smoothing effect on the big 5-cyl.

For my 24v I use: Castrol Edge Professional OE 5w40

Best oil IMO is Castrol 10w40 high mileage part synthetic, usually good specials at local auto parts stores and Walmart.

I'm in LA and I use castrol oe professional 5w-40 on my rebuilt 16v. The best oil I've used so far in my mk2 and I've tried a lot (Rotella t6 5w-40 Mobil 1 15w-50 and Total Elf 5w-40) all synthetics. Try it out. You won't be disappointed.

I use 5w-40 Castrol Syntech oil in my 2010 3.6 CC. I believe that if you are going to keep the car for a long time( over 100k miles) then I would use the thicker oil for better lubrication and wear protection. Owners in warmer areas like myself should use the 5w-40 due to the higher summer temperatures which will break-down the 5w-30 oil faster than the 5w-40 oil especially after a 10k oil change period.