Slow coolant loss?

[epicelite]

So over the last several months (6 months?) my coolant level has dropped an inch or so.

I don't even know where to start looking? Its such a slow leak I doubt I could find it visually or anything.

What do? Ignore it and just top off now and then?

[tomboy]

Check all hose connections for seeps, also check the overflow tank for leaks as well as the block freeze plugs.

[djfllmn]

pressure test it as well

[cvar]

Also check your radiator cap ($8), cuz mine leaked out once before. A few drops trickled out each time I drove.

Recently, my old radiator developed a slow leak between its metal core & the plastic side-panels that are crimped on. The leak grew over a few months, to I replaced the rad. See http://imgur.com/a/hNtZd

[dvrich]

If all the ideas mentioned yield no results then have an oil analysis done. It could be leaking into the block.

[Dale_K]

You could crawl under the truck and look up at the bottom of the water pump to see if you might spot a drip. Actually one inch down over the course of six months is the kind of thing I'd just keep topping off until it got worse. That's almost acceptable.