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Modified JK TechTech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.
PLEASE DO NOT START SHOW & TELL TYPE THREADS IN THIS FORUM
I'd flush/fill the coolant system, if it hasn't been done in the last couple years. You want it flowing nicely through the heater core so you can take full advantage of the Jeep blast furnace. Mine has done just fine even with the soft top at -15.
Hell yeah the heat is amazing in a Jeep until you turn it off then it's instantly -15 again lol