I’ve personally ran amsoil in all of my vehicles, and haven’t been disappointed
Just got my first Blackstone oil report on this engine. LiquiMoly 5W/40, 9,098 Miles. Here' s their comment: "We think you've got the oil change interval dialed in pretty well, but with results like these, you could push it a little if you wanted or needed to.
I have used the LiquiMoly kit and it seems great. Awaiting my Blackstone oil analysis from the first oil I put in...ran it for 9000 miles, which was more than I had intended.
Switched over to LiquiMoly Molygen since 90K. Engine and transmission drives like new.
Ran fine when I got it but I switched to amsoil and it has changed the sound of cold starts. MUCH QUIETER!! and seems to have smoothed out the idle over time.
Right now I have liqui moly 5w-30 in there and it runs fine.
I run Amsoil 5w40 warmer temps and Ravenol 5w30 colder temps.
I paid $90 for the 9 liters of liqui moly OEM oil my s5 requires and did it myself.
I've ran liquid moly strictly on my car.
Stage 2+ 2016 wrx here, in my experience (with having run both full synthetic amzoil and motul) I can honestly say that while both are rated very good for the FA-20 I would lean toward the motul simply for responsiveness. The car just seems to respond better to that brand, 100% just off personal experience
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