i think i will post mine !
2200km - OEM OIL 5100km - Castrol GTX 5w30 10100km - Amsoil ASL 5w30 15500km - Amsoil ASL 5w30 20700km - Amsoil ASL 5w30 
25300km - Amsoil ASL 5w30 29800km - Amsoil AFL 5w40 35200km - Motul Xcess 8100 5w40 40100km - Motul 300v (racing oil) 5w40 
(sorry for the long post).. btw i have 2 more oil sample to send .. 1 from another run with 300v ans 1 with 8100xcess (to get a good sample) i always use the same type of oil filter (white 6 star) from the same case, so they are from the same batch
imo . the motul 300v is the best .. but it's realy pricey .. look at the oil sample .. i will never run a oil less than a 5w40 in my engine for the reason listed.. 5w40 at minimum ! .. i found also that amsoil is a good oil . i have to try their 0w40 formula (they told me that the most advanced oil on their line) so in ±5000km i will try it!
Btw my engine take ZERO (0) oil .. even at 5000km it's about the same as when i put the oil in it .. and motul oil are a little bit prone to vaporization. so chek your oil level often (i do it when i put gaz .. so at least 1 time per week)
