Engine oil LIQUI MOLY or OEM Mazda
Currently running it in my B7 S4 with no problems.
I always use liqui-moly leichtlauf 5w40.
Liqui-Moly Molygen 5w40 every 3k-ish miles for me. I like Castrol, just prefer the LM. The quality is supposed to be fantastic.
Liqui Moly has some green stuff I put in my euro cars. It's pretty cool for finding leaks.
I use Mazda Moly 0w-20 in our 2014 Skyactiv CX-5.
Liquimoly 5w40. That stuff is money. Used to use Castrol in my RS4 but constantly was consuming between changes. Switched to Liquimoly and it stopped. Now i use it in all my vehicles including my bike. I just wait til NAPA has em for half price as they do right now then buy jugs. Just changed the Golf.
I use liqui moly as well (4200 long life), seems like it doesn't really matter, but picking oil with the correct grade (507/505) is key.
LiquiMoly!!!! Ask NGP in Maryland. They built my motor 7 years back. I used Mobil1 for 20 years. It's good stuff. But LiquiMoly is the ticket for me now.
I ran Mobil 1 20w/50 for 24 years. The guys at NGP use Liqui Moly everything so I switched after reading up on it. I'm REALLY liking Liqui Moly since I switched 3 years ago.
I'd go with [Liqui Moly Leichtlauf 5W40.](https://www.fcpeuro.com/products/vw-oil-change-kit-5w-40-liqui-moly-kit)
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