Does anyone know what the "deposit formation" criteria was for that test by Acura? I only looked at the link that buster provided, which only seems to include a graph of deposit formation performance for various oils, only one of which, the Mobil 1, is actually identified. A graph where the only labels are "excellent", "minimum acceptable" and "poor" doesn't tell me much.
Is there anyone that has a link to quantitative measures corresponding to "excellent", "minimum acceptable" and "poor"?
Cheers,
J