In this episode, I answer three listener questions that are better suited for the podcast format, including when it actually makes sense to use a block heater, what the “best” year of the 3.0 Duramax really means, and how certain topics are handled differently on the podcast versus YouTube. We also start a broader discussion around emissions deletes—why the topic comes up so often, how it’s commonly misunderstood, and why context matters—without getting into instructions or recommendations.

I also briefly reference my latest video explaining blowby and the closed PCV system on the 3.0 Duramax, and why visual checks like popping the oil cap can be misleading on modern diesel engines.

In the next weekly episode, I’ll take a direct look at the LZ0 3.0 Duramax and address a question many owners are asking right now: is it actually a bad engine, or is important context getting lost online?