Nothing is wrong with lawnboy and if I could bie some here in Australia were I am I would use it but I think the stuff I bought is similar in that it is a patrolium based oil and not a high quality synthetic oil so that it will bed the piston ring in more quickly and not glaze the cylinder head during run in, anyway that is my understanding of it but I am no exspirt but I am sure others are fare more quolified to coment on this.