Engine oil AMSOIL or Mannol

You can actually get decent quality oil which is not from an expensive brand for pretty cheap, particularly if you buy a 20l jug.

For example, Mannol offer fully synthetic oils which meet OEM specifications

I use it on my 22 street Bob. My mechanic swears amsoil will make it run cooler but idk. I’m going to try the amsoil when my 10k comes up soon. I’ll always run synthetic either way.

Been using Mannol 5w30 Full Synthetic for past 35k miles now without any issues.

I have personal experience with using amsoil in a Cadillac Northstar which are notorious for burning. It did stop that in that car

1.3 million on Amsoil. Shell is a close second.

Amsoil is worth it and head and shoulders above the competition. I used a custom built testing apparatus to characterize dozens of lubricants including oils of all weights from Mobil 1, Castrol, penzoil, valvoline, and Amsoil.

For the UK, cheap and good: Mannol Fully Bi-Synthetic Engine Oil Longlife 3 5w30

The car runs well, no problems starting up, no significant oil burning.

On my 05 cr125 I ran amsoil low smoke for riding mostly harder enduro stuff (worst bike for it, but a fun challenge).

I got a good deal on some amsoil and I love it, pricey but worth it tbh!

Amsoil z-rod is what I run but nothing wrong with rotella diesel oil.