how does this make sense? isn't VHVI supposed to be group-III? so how could 100% group-III be semi-synthetic???
100% VHVI but is semi-synthetic???
- Thread starter rondg
- Start date
how does this make sense? isn't VHVI supposed to be group-III? so how could 100% group-III be semi-synthetic???
Possibly in EU? Germany requires all Group IV to be considered full synthetic.
