Ha, yeah I bet they don't.FredS wrote: ↑Mon Sep 24, 2018 9:21 amThe symptoms of heating up under acceleration on cooling off at idle are the exact opposite of what I've experienced with a blown head gasket or cracked head. So that's good. I bet it has a leak somewhere. Try running the heater and see if you can smell it in the cab. Also - if you're feeling chipper today and can get yourself back up off the ground - get under it and look for a telltale green drop hanging from the low spots on the radiator or the plastic shield under it, the engine, and even the transmission and it's cross member. Of course, if you spilled anything when filling the radiator or reservoir that'll spoil the leak test around those areas for a while.sweetandsour wrote: ↑Mon Sep 24, 2018 9:09 amCooling system is dry. I filled with water, let the engine idle for 10-15 mins with the reservoir cap on, and there are no visible leaks. No water droplets on oil dipstick. Where'd the coolant go?sweetandsour wrote: ↑Mon Sep 24, 2018 6:11 amI'll be looking at my grandson's 05 Silverado 2500 today. He says the temperature maxes out when accelerating but drops down when idling or going very slow.
Plan to check coolant level, then for leaks, thermostat, sensor(s). Any other ideas are appreciated.
Fords never have this type of problem.
Anyway I filled the system with coolant. Haven't found the leak yet for sure, but there's a seal leak with a small amount of oil and that may be where some coolant is going. Thanks for your help.