I've got no problem with the mineral group 3 oil basestock being described as a synthetic as it's highly refined .
There's always group 4 and 5 true synthetics to add and then there's the additive package concentration.
Some good oils are just that , groups 3 , 4 and 5 + additive package .
Castrol ( BP ) are mediocre at best and their marketing stinks the worst being 4L and 'Magnatec' trying to make the oil seem special and unique but the masses don't have a scooby and seemingly fill their boots .
Love this one for SUV engines , SUV.....
Dual lock technology..
... WTF .
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