First post on the forum. I am working on a 2007.5 LMM that keeps getting extreme pressure in the cooling system. If I fill the bottle up above the fill line it can be driven for about a week to week and a half before low coolant light comes on. It is not loosing hardly any coolant. no external leaks. It builds alot of pressure and sucks the coolant down in the bottle. when i remove the cap it fills back up. I removed every glow plug to see if any coolant is in the cylinders and there was none. EGR Cooler? just wanted some feed back before I start ripping it apart and spending money. thanks
D
Dmax2005
New member From tehachapi, CA
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