Cart Remove item Thumbnail image Product Price Quantity Subtotal × Lubrication of Machine Elements $0.00 Lubrication of Machine Elements quantity $0.00 × Machinery Lubrication Engineer (MLE®) Certification Exam Preparation $999.00 Machinery Lubrication Engineer (MLE®) Certification Exam Preparation quantity $999.00 Coupon: Apply coupon Update cart Cart totals Subtotal $999.00 Total $999.00 Proceed to checkout Coupon codes are not eligible to be used for exam fees. A separate transaction is required.