Liqui Moly is Made in germany, it is the Nr. 1 best selling brand in Germany, it carrys genuine approvals, and they never played "Synthetic" games, they where always honest wich of their oils contains Group IV and Group III.
Nothing to Complain. A lot of my Co-workers and friends use it, nobody complains, no exxesive oil consumption, nothing.
Maybe there are better oils outside, sure. Liqui Moly is just a very good oil, nothing stellar. But Liqui Moly get a lot of undeserverd critics, especially here at Bitog it seems.
I am sure that Voltronic is also a good oil. But when it dont carrys genuine approvals, it should be cheaper compared to Liqui moly.
Only a VOA / UOA will show the truth wich oil is better.