Engine oil AMSOIL or ELF

It’s probably placebo but I feel that I burn less with Amsoil. That said with current prices I’ve gone back to my default of Castrol.

O-w20 amsoil is top notch, expensive but worth it.

I use Amsoil in every vehicle with an engine that I own...this has not changed for 25 years. Amsoil is so good I'd pour it over pancakes if I ran out of syrup.

I'm using amsoil 5w30. Great product. Real synthetic. Superior protection.

I use Amsoil 0W-20 (also on my 2020 Audi Q3) since it meets the specs.

Amsoil 25k Oil in a 2017 Ford Focus. Went 20k miles. Looked like standard 5k oil when it came out. Engine is still doing great 60k later! I do 7500 mile changes with Royal Purple now.

I use Amsoil in my Ford Fusion.

I use Amsoil European spec 0W20 for my '18 440i. It's engineered for vehicles requiring BMW LL-17FE+ so you know it's good

5w40 for sure, my engine sounds happier, quieter, more sound than it did when the PO had 5w30 in it. So 5w40 is a given especially since you have a lot of Km on the clock, when it comes to the brand it really doesn't matter especially if you keep the oil change intervals reasonable.

I use Elf Oil and I change mine every 5-7k miles.