[noob]Diesel d2-2rp - what fuel is that?

I just got an 20 years old diesel car. I visited a pump yesterday (Churerstrasse 154, 8808 Pfäffikon) and there were two fuel dispensers: one was black with text Diesel and one was Yellow with text (Diesel D2-2rp).

Could you tell me what is this yellow one and can I use it for my Hyundai diesel car?

-2rp means 2 cents cheaper.

D2 is for summer use, it may freeze in cold weather.

Tom

My car can't start today. It was 0` tonight. Could that be the reason? I doubt it, but just wanted to check all options. Worker on the pump told me to use the yellow dispenser