quote:Not necessairly. They purposely used a baseline sample to throw some people off. The wear rate per mile in a typical 5K drain from 0-1600 will ALWAYS be higher than the wear rate per mile from 1600-5000. Why? Remember that at each oil change, there is still about 0.5 of oil leftover in the engine. Those wear metals will affect the wear metal readings in the UOA, thus, you must take those #s into consideration as well. In addition, some additive clash that may occur may drive up wear for the first few miles, plus the dry start up wear after the oil change must be considered as well.
More evidence to suggest that longer drain intervals actually reduce wear. Look at those per mile wear numbers.
quote:There are only two possibilities for any Amsoil test: a) Amsoil will not hold up over the extended drain as claimed -- Therefore, they tell fibs. b) Amsoil seems to hold up a little too well over the extended drain as claimed -- Therefore the data must be faked -- They tell fibs. (Tongue planted firmly...you know the rest) Well, there sometomes is c) Through mechanism still unknown to tribologists, Amsoil's MLM structure affects the lubricating properties of the oil. MLM's always tell fibs.
Oh I get it. Amsoil looks good = cheating. OK.