the service plazas on the Ohio turnpike are actually GREAT for RVs/TTs. They have regular gas pumps by the big truck pumps so you can easily pull right thru, and they are clearly marked Diesel or Gas.
As a bonus, some of the plazas have dedicated RV overnight parking. For $20, you get electric hookup, potable water available, and a dump station
not sure of the air fill situation, haven't had a need yet.
we plan on stopping for a night on our next trip east.
check it out here:
http://www.ohioturnpike.org/travelers/service-plazaswould be great if other states catch on and use this as an example!
