My GL550 has about 106k miles on it, just did an oil change with LiquiMoly 0w-40 and 2 bottles of LiquiMoly ceratec. Drove it kind of hard for a minute or so. Then noticed when I got back it had this noise.
The recommended Castrol isn't bad, but I've had better success with Mobil1 and Liquid Moly.
Try using liqui moli engine oil, change the air filter too.
After completing the 1000 km run in and going through the first service where I got Cepsa xtar 10w40 oil, the gearbox remained hard, compared to my previous F650 bmw.
Did some digging regarding engine oil and how I could improve my gear shifting experience, engine smoothness and durability and the choice was either Motul 7100 or LiquiMoly Street Race 10w40. Decided on Liqui Molly and definitely I am noticing much smoother gear shifts and maybe even less vibration. I am surprised. The change is definitely noticeable.
5w40 liquidmoly
Imo Mobil 1 is mid grade at best. Liqui-moly is the only thing I’ve used for the last 5 years, I too started with Mobil 1, then switched to liquimoly (same weight) and the engine was immediately quieter, smoother, and ran cooler.
Start by getting rid of that junk liqui moly and replace it with ROWE RS 5w40 (i can link many kits if need be)
Got an oil change @ 94.1k using liqui moly 5w40. Low oil Light popped up at 96.4k. (Added 1 quart). Now I’m at 96.6k. Checked again and the bar is just one level under the “max” Why am I burning oil so quick?
my 2017 Passat got totaled in a accident this week, was at 205062 miles running strong off Liqui Molygen 5w-40.
Take liquimoly for instance, they only have certain oils that meet the VW 508 00 spec but many of their oils are the same weight. None of which will cause your engine to explode if you use them.
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