Would Higher Octane Run the Gen Better? UPDATE

I'll move to a new topic since it's not exactly the same... but to answer MrWizard's question, it's just the electric heaters directly into the generator via an extension cord, Kill-a-watt & a power strip. No RV or house involved.

Here's the new thread:
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29792604/p/1.cfm