Engine oil Castrol or AMSOIL

Castrol Edge 5w-30 Full Synthetic Euro Car. It carries the BMW Longlife 01 cert.

I’m using Amsoil Signature oil.

I recently did my first track day on a day with 105 degrees temps. I went with Castrol Edge 5w-30 and the car did amazing.

Yesterday I took my car in for an oil change and got amsoil. I read countless comments of people hating on the price, this and that, but let me tell you somthing, that amsoil ain't a gimmick or a rip off. My car drove sooooo much better afterwards, it kinda shocked me. Smoother, seems faster, more. Consistent shifts, just left me feeling like she felt the best version of herself.

I use Castrol for my 05 320 cdi. It meets the extended service oil spec, but I run it as "regular" oil.

Go with ams oil I use to talk mad shit about the product but honestly I’m pretty satisfied with it because Harley’s syn 3 is just become trash leaving lifters ticking on and the bike has always had the Harley tick but it has quieted it all down. Just my opinion though..

I use for 2 years Castrol 5w30 its perfect after for top up i use Ina (croatian motor oil) and works perfect

I use Amsoil in all three, but I use their VTwin kit for my M8. Different trans, primary and engine oils.

I was absolutely amazed at how much smoother and more responsive the bike was.

i use amsoil saber when i have it but not at 100:1 I don't really care if the engineer says its fine.

Castrol. I've just always used it. A bit of advice though, i'd recommend staying away from Pennzoil, I had to clean an engine out after using it. Nasty, waxy stuff.