Originally Posted By: Jimzz
Talk about weasel words.
They're not really weasel words. They're accurate. The PQIA doesn't run the entire regimen of tests required for SN/GF-5 certification. It's a lot easier to demonstrate cheaply that the oil is out of spec, rather than within spec. A $30 VOA can show that the viscosity is totally wrong or that the phosphorus is out of whack. Those are enough to preclude GF-5 certification, for instance. Confirming the certification, however, takes a little more than checking viscosity, Noack, and running an elemental analysis.
I suppose the working assumption is that someone trying to cheat the consumer by selling something that can't meet the specification isn't going to have something that's pretty darned close. They're likely going to be offering something that's grossly unsuitable.