Description
Castrol Optigear Synthetic CT 320 Synthetic gear oil ISO VG 320
Castrol Optigear™ Synthetic CT 320 is a synthetic polyalphaolefin (PAO) gear oil designed to perform in the most challenging of applications, especially those found in the wind industry. Its high viscosity index coupled with advanced gear oil additives make it an ideal lubricant for gear boxes where large changes in temperature and humidity can not be controlled.
Application
Optigear Synthetic CT 320 has been formulated specifically for use in wind turbine gear box applications but it can be used for all types of enclosed gears – including heavy and shock-loaded gears and bearings where EP properties are required.
It is suitable for use in gear boxes where micro-pitting resistance is required and for a wide range of applications in extreme environments including mining and quarrying, marine applications, and paper production.
Specifications / Approvals
- DIN 51517-3 (CLP)
Advantages
- Maximum protection of gears against wear and shock loading, including protection against micro-pitting.
- Excellent thermal and oxidative stability provides reliable operation and extended operating life when compared to mineral oil based products.
- High corrosion protection for gears.
- Inherently high viscosity index makes the product suitable for operations over a wide temperature range.
- Good water separation and demulsification characteristics reduce down time through prolonged lubricant life and increased equipment reliability.
- PAO base provides good compatibility with seals, paints, and mineral oil based lubricants
Technical specifications
- Appearance: Clear & Bright
- ISO Viscosity Group: 320
- Density @ 15°C / 59°F: 856 kg/m³
- Kinematic Viscosity @ 40°C / 104°F: 335 mm²/s
- Kinematic Viscosity @ 100°C / 212°F: 40.0 mm²/s
- Viscosity Index: 172
- Flash Point – open cup method: 240 °C
- Pour Point: -45 °C
- Volume: 20l canister
- Also available in: 5l canister, 208l barrel
- GLIS number: 1512B3
- MSDS code: 467536
BP Europa SE, Erkelenzer Straße 20, 41179 Mönchengladbach, GERMANY, +49 800 7235 074, [email protected], www.bp.com






Emma –
Perfect for my needs; I couldn’t be happier. The quality surprised me in a good way. Very effective, I noticed a change in just a week. Very effective; noticed a change after just one week.
louis75 –
Perfect job, thanks. Delivers what it promises. Highly recommended.
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Very satisfied with the purchase.
Cédric V. –
Very satisfactory. Very functional. Very good experience.
valeria88 –
A friend recommended it and I’m so glad I ordered. Looks even nicer in real life. No unpleasant smell, which I really appreciate. I was skeptical, but now I’ll order regularly.
abby_lee –
Packaging was slightly damaged, but product is excellent. Very fast delivery, thank you. Perfect for my needs; I couldn’t be happier.
noemie75 –
I’ve been using it for 2 weeks and already see results! Easy to use, without making a mess. Excellent product, worth every cent.
Isabell –
Super fast delivery, thank you.
isabella_it –
Been using it for 2 weeks and already see results!
emilia88 –
Better than anything I’ve tried so far. This solved my problem completely! Very satisfied, better than expected. Perfect for my needs, couldn’t be happier.
Daniel E. –
Well-made product. Great value for money. Everything OK, recommended.
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A friend recommended it to me and I’m thrilled with the purchase.