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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...

Sounds good

Where on or from the firewall are you seeing coolant? If it's just dripping from a location, it doesn't mean that's where the leak is. Your other...

I get mixed opinions, as well. All answers are right, and wrong, depending on the context. A 2018+ is probably best to lift the cab, if you have the...

DMax- Yep, we are going to pull it before we decide anything for sure. Sent in a oil test just out of curiosity

it's driving me nuts, the leak at the firewall seems to be intermittent.

Thanks Robyn I have decided to go with your advice. It will take me a few months to overhaul the engine and install it in the boat. The reason for...

In my experience, the fittings rarely "click". They usually "snap" into lock, more like a detent falling into place, a slight feel, but rarely an...