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They work great for oil. Not quite enough heat for the motor up here, you still need the coolant heaters. We add them to transmissions, hydrolic...

and another option ...

Hell next year my 06 will become an antique ! Almost160k miles

Those old beasts are still plying the slabs..

Good to see TDP is still supporting this antique engine. And when I say "antique", it's not in a negative connotation. :)

The engine pre-heater I mentioned is the factory frost plug block heater. It's located in a driver side lower frost plug hole, the only one with a...

My truck runs cool. it takes 10 miles or so to get to temp ( one needle mark to the left of the 210* mark) then I get large swings while driving, Ive...

The articles discussed below are available online right now, in the subscriber section. While the articles pointed to here address 6.5L...

I'm not certain about the LBZ, but other models have coolant passages through the tranny adapter, and may also supply coolant to the cooler. Any...

The only leak I can find so far is at the hvac heater connectors but not all the time, on the floor it's on the driver's side. I was figuring it...