Cart Continue shopping “Improving Oil Analysis” has been added to your cart. Product Price Quantity Total × Machinery Lubrication Engineer (MLE®) Certification Exam Preparation $1,950.00 Machinery Lubrication Engineer (MLE®) Certification Exam Preparation quantity $1,950.00 × Improving Oil Analysis $250.00 Improving Oil Analysis quantity $250.00 Code: Apply code Update cart Cart totals Subtotal $2,200.00 Total $2,200.00 Proceed to checkout Coupon codes are not eligible to be used for exam fees. A separate transaction is required.