Is anyone a mechanic or gear head on here? For the heck of it today I figured Id open the hood of my 2002 Chevy S-10 with the 4.3 V6 Vortec. I was just poking around to make sure everything is ok. I noticed that my coolant or Dex-cool resivoir is really low. Can I just by some new Dex-cool coolant and ad it in. Or do I need to take it to a mechanic to have this done? The truck hasnt been running hot but I honestly havnt really paid attention to it. I just took it into NTB for new tires and a oil change on Sunday but I guess they didnt look at all the fluids becuase the did not say anything. Any help is appreciated

Thanks
Ray