Varnish and Deposit Prevention and Removal (VPR) Certification PreparationPosted on July 3, 2026 (July 6, 2026) by Michael Holloway Course Content Lessons Status 1 VPR Part 1. Introduction to Varnish and Deposit Prevention and Removal 2 VPR Part 2. Varnish and Deposit Prevention and Removal in Industrial Lubrication 3 VPR Part 3. The Reliability Cost of Varnish and Deposits 4 VPR Part 4. Lubrication Varnish and Deposit Prevention and Removal Strategy