Originally Posted by T-Stick
One of the major flaws I note in antiwear testing is that the oil is not first heated to engine operating temps which essentially thickens it to its proper viscosity for loading. So in essence this methodology theoretically tests which oil has the best extreme pressure antiwear at startup.
Right, that's why the "wear test" (results) he does is somewhat dubious. He can not, in his garage, duplicate the heat and pressure to "activate" the lubes EP chemistry - you'd need a reference engine w/teardown for that. At best, and I'm being generous here, his test, simulates startup w/respect to film strength. But I don't know how long he's running that one arm bandit and at what load etc...so the results are what, subjective at best?? But I suppose you could argue that what's unfair to one is unfair to all, right? Not very scientific though..