Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Long on generalities short on real data

I knew this book was dated before I purchased but given the author I expected to learn something.The book is full of obvious observations familiar to anyone that had even the faintest interest in engines.No useful hard data is to be found. I did not expect a treatise on any of the subject related to model engine design/build and operation but I can not say to have learned anything above generalities already known.No mention of Glow Plug which was new at that time.Not one table of data.Not one diagram. Whell just one fundamental.No specific discussion on fuel or lubricant comparison.Nada