Great- we are all seeking knowledge from a credible source. I just hope we find him/her before the opinionated types ruin this Thread :-) No contributors are so far in that bad category !
I am fascinated by the extent to which oil recommendations that are valid for conventional engines are less valid for the M96. That is why I went hunting through the Subaru world. I have been doing this water-cooled flat engine thing longer than Raby - my first one was a 1965 Lancia Flavia.
Lancia Flavia: What I Drove Yesterday For 570 Miles Through A Snow Storm