Pro tip: A $9 parking brake cable taught me why following the manual beats asking the forum | Ask Anything - Freelance Forum - The Community for Independent Professionals
A $9 part sounds cheap until you add up what the forum thread cost you. I spent three weekends chasing a coolant leak once because some guy on a truck forum swore it was always the water pump on those 5.4s. Turned out to be a $4 hose clamp the manual literally points at in step 6 of the flush procedure. The manual is boring on purpose, that's the whole point, it just lists the steps in order and doesn't care about your feelings or your theory about what it probably is. And here's the thing, when you guess wrong you don't just waste the part money, you waste the time, and then you start second guessing the one thing that was right all along.