Brilliant post @Avantly. I owned fast lubes for 15 years and can tell you many stories about additives, oil consumption, and weight differences. Follow the manufacturer’s recommendations! It really is that simple. Viscosity = Flow rate. Lower viscosity better flow rate. I have an A7 with an upper passenger (NA) side chain rattle, constant. Started the same day my PCV started whistling. It was pouring rain, which is uncommon where I live, and I had the radio up so I didn’t notice it until I came to a stop light. At that point I heard the noise and looked to the Honda next to me and thought, wow he needs a new A/C belt. Lol, nope it was me. Turned into my destination and shut the car off. Next morning I started the car and had a rattle that didn’t go away. It has sat now for a year and a half. Just finished my garage remodel and will be pulling the motor to do the tensioners and chains at the end of the month.


Sent from my iPhone using Audizine