I just tried the diesel and it has a nice taste( not as fuel based as i thought though, I think the og kush in its lineage is the most pronounced) and had a nice indica high with some couch lock, but I noticed if you smoke a little it seems more of a balanced high then if you smoke a lot , which feels like a powerful indica.
I'm sorry to contradict you, but Diesel strains are heavy sativas if I'm not mistaken.