Anytime it gets into the 20's or below ill leave my Pete plugged in all night. They only get maybe 125 degrees and if you think about thats alot less then operating temp so how would it "scorch"" your coolant?. Just make sure to never start your truck with it still plugged in, some strange cases of them exploding can happen from water pump cavitation.
Garett-24 07lbz CC/SB,Lowered,Big Dipper IV,Suncoast "777",Pump rub fix,Fass220,MBRP 3"Dp 4"split rear exit w/5"tips,Efi wDsp5,SDP EGR delete,PCV rerout,PPE fuel bypass plug and ported fittings,Cognito UCA's and brace kit,kryptonite tie rod's,Moog Idler/pitment arm,Bilstein Shocks,Sb Intake,Isspro EV2 Pyro/boost/trans,305/50/20's on 20" Gloss black Hoss's,Pioneer Indash Touch screen Nav,All on mod,8k HID's (Hi's,Low's,Fog's) 15% Window tint
56 Chevy Pickup-Built 350,M21 4speed,13.5@100
55 Chevy sedan-350/350
57 Chevy Sedan-Soon to have ls1/T56
49 GMC Rat rod pickup-chopped and channeled