Poll: Your best engine oil + any additives

I have found much wrong with the Castol oils... for me, the best oils are the Bardhal

Bad in what sense? consumption of oil, heat and pressure, sludge in the engine?

I also tried the 5w40 magnatec's, being fullsynt, was hoping for a better cleaning inside the engine..

evil in the sense ke became water...I speak of the 10w40

Understood..
Now what kind of bardhal do you use? have you tried other brands?

Always a 10w40

You can draw up a list of the staff of the 10w40 you tried?

1) Bardhal
2)Motul
3)Selenia
4)Gm oil..and the oil regenerated l I have used it in extreme conditions, and no I can't complain
5) Catrol

Both on car and on the bike I am fine with Bardhal Xtc60. Drive use the 5w-40 while on the scooter to the 10w-50.

Someone conesce some heat treatment to change, and the purpose of it?
I would advise additive exchange for when the gears are struggling to get in?

and I to the exchange, I recommend you additives bardhal are also great as an oil