I agree with Bill on AVP.  My 2.0 has about 15K with no complaints whatsoever.
(Of course I borke in carefully, follow rigid maintenence schedules, do the
warm up, use quality syn oil...) AVP was liberal with the core charge return,
but in the shuffle they had no idea who to send the core refund to, and after
about a year, I got the refund.  Erin at AVP is very friendly, and if I
remember correctly, they have Kyle Wade's blessing. SO, while I can't (and
won't) bad mouth anyone else, I recommend giving AVP a call.
my$0.01 (it's a blue light special on opinions!)
Thank you, and good night.   P.