Recently went searching for a 10w30 full synthetic for my Kubota l3560 tractor. I had a hard time finding a full synthetic in this viscosity.I found Mobil delvac extreme online in a full synthetic. Found a distributer in Joplin who carried it. When it came in the mail it said semi synthetic. I called the distributer about it and they contacted Mobil. Mobil reclassified it as a full synthetic and has not changed the bottles yet. Mobil confirmed it to me personally. I thoughts this was very odd. Has anyone seen this before?