Re: I think it's missing some of the additives needed for a car engine
I know someone who ran their diesel pickup on A-1 for a while... It runs just fine, but long term it's terrible for the engine. That engine and the injectors experienced all sorts of accelerated wear; I think the A-1 provides less lubrication than standard Diesel #2, and burns somewhat hotter.
So, it will get you where you need to go in a pinch, but I wouldn't run it in an automotive diesel engine long-term.