Hi Guys,
yes please do use 3% powerup NNL690 additive to engine oil, 1%? to power steer and auto fluid and do add .5ml per liter of gasoline for UPPER cylinder lubrication, the key words being, boundary lubrication.
To demonstrate the value of this, obtain some powerup, mix it with oil and see what happens, its much different that observed with untreated oil from my observations, imho, thus boundary lubrication is kept and that is important, look after your investment.