I just use LiquiMoly 0W-20 with the VW spec
Liqui moly solved lifter noise on my old Kadett.
Liqui Moly Molygen 5w-40
Fellow mu-X owner here! If you're thinking about upgrading from the standard Isuzu Genuine Motor Oil 10W-30, check out the ZIC X7 Diesel 10W-30 Fully synthetic. I used Amsoil Turbo Truck 5w40 too (10k km interval) but it's expensive for my Garage queen mux haha. Mobil Delvac1 5W-40 is good as well.
I recently changed the engine and transmission oil in my car and opted for Liqui Moly, as from what I researched it withstands higher temperatures compared to the OEM.
I’ve personally been running Liqui Moly LL-04 5W-30 as this grade seems a lot better to be using in a high performance engine to induce longevity. Plus the gen 2 B58s don’t have the same oil pump issues as the gen 1.
I have Signature in my 25. Smoothed out the engine noises quite a bit.
My own experience: liquimoly Mos2 leichtlauf. The one with grey oil.
I did an oil change with liquimolly 5w-40 and added liquimolly lifter additive, and drove it for a week hoping it would go away.
Get a catch can but that mobile 1 oil you are using is for shit . Amsoil is best for mustangs and the best for that matter period it\u2019s cost but you can run it 25k
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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 LIQUI MOLY were overall better than AMSOIL.
In March 2026 on PartReview, engine oil LIQUI MOLY were overall more popular than AMSOIL.
By vote balance, engine oil LIQUI MOLY surpassed AMSOIL:
By number of reviews, engine oil LIQUI MOLY surpassed AMSOIL:
In March 2026, according to PartReview, engine oil LIQUI MOLY led more car-specific ratings than AMSOIL:
LIQUI MOLY are chosen by owners of cars such as: Audi A4, Porsche Cayenne, Volkswagen Golf, Audi A3, Audi S4, Audi S5, Audi SQ5, Volkswagen Tiguan, and others.
AMSOIL are chosen by owners of cars such as: Honda S2000, Toyota 4runner, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil LIQUI MOLY with: Mobil, Castrol, MOTUL, Shell, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
Also available: comparisons of engine oil AMSOIL with: Mobil, Castrol, MOTUL, Shell, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.
