Castrol EDGE Euro is also VW 508 spec.
The mechanic is absolutely wrong. You must use a 5W-40 C3 oil with the Fiat 9.55535-S2 specification, I use the Castrol Magnatec 5W-40 C3, which is cheap and easy to find, but any other brand with the correct specification is fine. A 0W-20 oil has insufficient pressure and film strength, and will lead to damage over time.
The 508 spec gets you better mpg and less dirty emissions. Gotta look at the bottle carefully. Mobil ESPX2 0w20 has that spec.
262k miles here on an M54B30 with 10k changes, Mobil 1, it's running great.
It should be fine. I use Mobil 1 and it's worked great.
I have a 450k km 1.9 tdi, and a 300k km 1.6 tdi, i always use 5w30 castrol, no issue.
I would only suggest using \"premium\" oil brands, like Castrol or Elf, in correct specification.
Castrol Power1 is really good though
Expensive. I’d stick to Mobil 1 or Kirkland
Mobil 1 for me is like water in this car. I ran it for the longest time till I was tuned but switched over
Write your review
Help others - share your experience with this part.
If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil Mobil were overall better than Castrol.
In March 2026 on PartReview, engine oil Mobil were overall more popular than Castrol.
By vote balance, engine oil Mobil surpassed Castrol:
By number of reviews, engine oil Mobil surpassed Castrol:
In March 2026, according to PartReview, engine oil Mobil led more car-specific ratings than Castrol:
Mobil are chosen by owners of cars such as: Chevrolet Camaro, Infiniti G, Lexus IS, Opel Astra, Volvo V70, Chevrolet Corvette, Chevrolet Silverado, Ford Focus, Ford Mustang, Ford Ranger, Hyundai Sonata, Hyundai Tucson, Hyundai Veloster, Mazda 6, Volkswagen Jetta, and others.
Castrol are chosen by owners of cars such as: Skoda Octavia, Audi A6, Audi A7, Audi TT RS, Ford Explorer, Volkswagen Beetle, Volkswagen Corrado, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil Mobil with: LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
Also available: comparisons of engine oil Castrol with: LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
You can also see who is better among other engine oil manufacturers: Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol, Mobil or AMSOIL.
