Is Dry Gas Good for the Blazer during the winter.?..

I was told to put dry gas into the gas tank when the temp is under 30 degrees.
Will this damage the engine and fuel injector.?..

I've never heard of dry gas. Is that like a moisture remover?

Yes it's a moisture remover. As for damage - I've never had any problem but you don't need to run it all the time. If anything it would be an occasional thing. I would think a good sealed system should do a good job keeping out moisture.

The best trick for keeping moisture out of the tank is just keeping the tank topped up through winter. I never let it drop below 3/4's full. But if you are in an area that neccesitates the use of Dry gas - I would do it at the most, once a month or every 4 fill-ups. Not a tank-to-tank sorta thing to do at all, IMO.

dri gas, great stuff, but... it is a patrolium distalent, meaning you dont want to run it often, ones ever 4 or 5 tanks is sufice. unless you are blazer lt's neighbor then once ever other tank is enough... if you dont run your tank below a half you shouldn't get moisture in there, the way it works is hot fuel pump exposed to cold air makes condencation, causing water in the system, keep the pump submerged, no condencation