im not sure of the blend..its not alot as a full synthetic...its just a small blend..im guessing group 2 or 3. i use mobile drive clean with a mix of mobil clean blend. (1 qt blend 2 qts normal). i really like it..i noticed some improvment...maybe it can be cause of my bosch filter as well but since this is the first time trying this oil, i like it.
Since people tend to make fun of my Wal-Mart house brand dino, I'm a bit perplexed to find such admiration for a group I oil thats specs are quite a bit worse than the SuperTech. Flash point something like twenty degrees F lower if memory serves me right. I assume group I trades stability for cleaning ability, right?
I also agree that if you want this stuff, throwing a half quart of M1 with four quarts of DriveClean should be less expensive.