The Clymer manual for the 250 450 is truly amazing .Based on our own experience using it on various automotive repairs this manual has saved us a lot of time and effort in identifying and fixing issues. The pros of this manual are its detailed instructions, clear pictures, and easy-to-follow steps. However, a minor con is that some sections could be more detailed. Overall, this manual is a must-have for anyone WHO is serious about automotive repair..See full review