low coolent over night...

[cchase]

What does it mean when my coolent is low in the am after a cold night.. then it seems it is back to normal later on. somedays its low some days its not and I dont add anything? its weird... also had a real hard start this morning chungging, black smoke, white smoke, stall... kind of thing....

[dieseldan2005]

When you say its back to normal later, is that after you've been driving it for a while?

[Strõkër~X]

first check you coolant level in the AM before you start the truck, it is marked with a min line to maintain rec fluid level...then after driving it for awhile, check the coolant level again, do you plug the truck in at all?

[cchase]

no, its fine in like 10-15 secs. and yes its back to normal after I drive it. Although I am seeing some green around the thermast housing. but its only 8 months old, I try and plug it in at night but sometimes im lazy and forget.

[dieseldan2005]

Maybe its still leaking around that housing. After you drive it, the coolant expands and will make it look like its back to normal cause it pushed more into the overflow bottle.