30yr ago was 1991. Pretty much anything with fuel injection (i.e. basically everything in 1991) will start just fine at low temperatures. The one OEM who's pr

30yr ago was 1991. Pretty much anything with fuel injection (i.e. basically everything in 1991) will start just fine at low temperatures. The one OEM who's processes I have knowledge of with was doing their testing down to -40F in the late 1980s (which coincidentally is the temperature at which their electronics system starts throwing codes for misbehaving temperature sensors).