On some of the new Mobil 1 containers (the extended protection oil) there is no starburst symbol. And also the oils, even in 5W-30 and 10W-30 viscosities, are not listed as being energy conserving. To me this is strange, since these are synthetic oils.
Why no starburst symbol and why not energy conserving?
Why no starburst symbol and why not energy conserving?