We have been using Motul Factory Line oil for several years in our race bike. We have never had any lubrication issues. We have been offered oil from other companies free of charge but have declined the offers. We were actually sponsored by Motul in the past but having missed a few seasons where we were not able to race and only being a small team all be it racing at an international level, we lost our sponsorship. However when we have raced we have continued to use Motul Factory Line 300V 15/50 and we will not use anything else. Gary Smith Team GP1 Lung.