Designed for service in the drive train gears of heavily loaded equipment and passenger vehicles. The EP additives contained in all Spirax HD oils provide excellent, long lasting protection against scuffing and minimize wear, even in the toughest operating conditions.
Superior Thermal and Oxidation Stability - Spirax HD provides superior resistance to high temperature decomposition (breakdown). Even when operating conditions approach 150 °C, Spirax HD outperforms conventional API GL-5 lubricants. This improved thermal and oxidation stability helps ensure that deposits do not form around seals and helps maintain clean bearing surfaces to minimize wear. Depending on the ambient temperatures involved, Spirax HD 75W-90 and 80W-90 provide potential one grade, all-season operation. They can eliminate the need for seasonal changes and reduce the number of gear oils required.
Superior Thermal and Oxidation Stability - Spirax HD provides superior resistance to high temperature decomposition (breakdown). Even when operating conditions approach 150 °C, Spirax HD outperforms conventional API GL-5 lubricants. This improved thermal and oxidation stability helps ensure that deposits do not form around seals and helps maintain clean bearing surfaces to minimize wear. Depending on the ambient temperatures involved, Spirax HD 75W-90 and 80W-90 provide potential one grade, all-season operation. They can eliminate the need for seasonal changes and reduce the number of gear oils required.
- Superior Load Carrying Ability
- All-Season Service
- Potential for Fuel Economy - Spirax HD multigrade and low temperature range features lessen frictional energy loss which improves fuel economy