No Drain/No Spill 🌡 Thermostat Replacement | GM 3800 (and others...)

There's always a trick. In this video, I demonstrate a trick to easily change the thermostat on a GM 3800 V6 engine, without spilling any coolant, and without the need to drain any out. This trick also applies to any engine where you find a bleeder valve on the Thermostat housing near the top of the engine.

** Need to find a leak? Check out my recent (January 2024) video on how to properly use Ultra-Violet (UV) "Tracer Dye" with a UV flashlight to hunt down a cooling system leak:

* HOW TO FIND A COOLANT LEAK FAST! (UV ...

W-Body cars include:

Buick Century
Buick LaCrosse
Buick Regal
Chevrolet Impala
Chevrolet Impala Limited
Chevrolet Lumina
Chevrolet Monte Carlo
Oldsmobile Cutlass Supreme
Oldsmobile Intrigue
Pontiac Grand Prix

(Source: https://en.wikipedia.org/wiki/General...)

The 3800, also known as the "Buick V6", is one of GMs best engines in my (and many others') opinion. More about this engine, its history and background, can be found here:

https://en.wikipedia.org/wiki/Buick_V...

If you do require adding coolant, be sure to only use GM DexCool or compatible coolant. I know there's controversy around this but in my experience, going with the manufacturer's recommendations will ensure that the coolant is compatible with all parts, seals, hoses etc...

The thermostat itself is an inexpensive part. Luckily for us (if you have this engine), it's right on top and super-easy to get to. And using the trick in this video, it can be done with ZERO mess.

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For Youtube:

** Contents of this Video (aka Chapters):
0:00 - Introduction to the Problem
0:56 - A Little Bit about Thermostats
1:53 - Location on the 3800 V6
2:46 - The "Trick" (for no spillage)
4:54 - Start Up and Bleed the Air Back Out
5:28 - Take it for a Drive
5:49 - Reset the Engine Light
6:10 - Wrap-up