I recently replaced my transmission oil with Red Line MT-90 and was wondering what MKIII owners think of this oil. I read many of the posts on this subject including the one that says Red Line MT-90 is not recommended fro the MKIII turbo. My service manual specifies GL-4 oil which is what Red Line MT-90 meets so I went ahead and used it. Although my opinion is subjective, I do think my transmission shifts easier. Has anyone experienced problems with MT-90? Have you been happy with MT-90?