It was obvious when he said he had a 425hp engine. However, he said what he said and what he said was that he had a second" jake brake. When only dealing with a written communication, you have to take the person at their written word....you can 2nd guess them, but you are still left with what they actually wrote and have to surmise that is what they believe. You and I both know that he doesn't have two Jake brakes, but maybe he doesn't. Anyway, it's a moot point as I'm sure he is fully aware of his error just from the replies he was given.
Ron