Originally Posted By: Linctex
If it MEETS API spec SN, who would fear it?!?
To be honest, I'm not impressed if it meets the minimum specs to qualify for API SN. If it was so easy to do, why couldn't they be bothered to do it before they were sued for false advertising. QSUD can be had for close to that price per quart when purchased in a 5 quart jug, so why bother with it?