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The Lube Page Podcast #28 (AW)

Topics:
- XW-20 / XW-30 What does this mean
- Explanation of SAE Viscosity System
- API Classification System
- Purpose of going to lighter weight oils
- Discussion of 20 weight oils and limits of performance
- Normal and Intermittent range for engine oils
- Proper viscosity for optimum bearing lubrication
- Variable valve timing systems oiling requirements
- Caution on low quality synthetics and fraudulent oils
...more