One is for troubleshooting glow plug systems, and the other is for information related to servicing diesel fuel injection.
If you are a diesel enthusiast, these are a must-have for your collection. These have become rare and hard to find in this condition. Not perfect, but above average. These will teach you the basics!
1970s Early 1980's Factory Diesel Education Manuals - Genuine
$60.00
SKU:
FM-DSLEDUCATIONX2 