1: This thread has been well and truly hijacked and has wandered far from the problems the OP has had with his SHO.
2: Given the problems he has apparently documented regarding his vehicle from almost the Get Go, I refer you to earlier threads starting in 2009/2010 (search yourselves, but Lotus something got a new car and at least a few others got a replacement car for very similar problematic vehicles).
3: So as to go with the hijacking flow since I am a rather mellow sort, I am 71+ and may perhaps be the oldest owner on this Forum.
I only burn 93, for what that is worth.
4: My 2010 SHO is not my first rodeo either, as many of you other members, I have been into performance vehicles since the Ice Age.
5: I would be glad to share the experiences I have had with performance cars since ca. 1956 but I think we need to get back to supporting the OP in his quest for some satisfaction from FMC. I know if my bone stock 2010 which now has a paltry 10K miles on it (I don't get out much anymore) blew a motor at 20 something thousand, and I had all the other problems he had, I would be all over my dealer and whomever I could talk to at FMC to get a replacement vehicle.
6: FWIW, I think the usage of 87 Octane fuel as a possible reason for his engine failure is beyond lame and a major Fail. FMC says it is OK, ergo, it is OK, end of story.
Not really trying to stir the *** but I think some of you guys are going a bit overboard in the gearhead department.
As they say, my two cents.
Bill