Description
Castrol Optigear Synthetic™ 1710/320 is a high-performance extreme pressure gear oil (ISO VG 320) formulated with Castrol’s Tribol Gear Oil Additive (TGOA) Plastic Deformation (PD) additive and high-quality mineral base oils and synthetic polyalphaolefins to help tackle wear-related problems in heavily loaded industrial gears and bearings.
- Pack size: 20 L canister
- Also available in: 208 L drum
Applications
- Spur, helical, herringbone, bevel and planetary gears; geared couplings; rolling and sliding bearings; gear drive circulating systems
- Usable temperature range (application dependent): −30 °C to +95 °C (−22 °F to 203 °F)
Approvals & Specifications
- Classification: CLP-HC (DIN 51502); exceeds DIN 51517 T.3
- Compatibility: compatible with most mineral oil, ester and synthetic-based products (up to ~3% residual without issues); not compatible with polyglycols
Features
- TGOA PD enables micro-smoothing of surface roughness under activation energy, delivering very low friction and optimum wear protection
- Protects against scuffing and shock loading; high load-carrying capacity
- Can help prevent progression of micro-pitting in pre-damaged gears
- Lower operating temperature and noise; extended service life of gears and bearings
- High viscosity index: easier cold start-up and sufficient film at high temperatures
- Running-in pitting is prevented or stopped; lapping often unnecessary; previous pitting/damage can be halted or visibly reduced
Technical data
| ISO Viscosity Grade | 320 |
| Density @ 15 °C / 59 °F | 875 kg/m³ (ISO 12185 / ASTM D4052) |
| Kinematic viscosity @ 40 °C / 104 °F | 320 mm²/s (ISO 3104 / ASTM D445) |
| Kinematic viscosity @ 100 °C / 212 °F | 31.2 mm²/s (ISO 3104 / ASTM D445) |
| Viscosity Index | 135 (ISO 2909 / ASTM D2270) |
| Flash point (open cup) | >240 °C / 464 °F (ISO 2592 / ASTM D92) |
| Pour point | −30 °C / −22 °F (ISO 3016 / ASTM D97) |
| Rust test – distilled water (24 h) | pass (ISO 7120 / ASTM D665A) |
| Copper corrosion (3 h @ 100 °C / 212 °F) | rating 1 (ISO 2160 / ASTM D130) |
| FZG gear scuffing – A/8.3/90 | failure load stage >12 (ISO 14635-1) |
| FZG gear scuffing – A/16.6/90 (modified) | failure load stage >12 (ISO 14635-1) |
| FZG micropitting test @ 90 °C / 194 °F | >10 / High (FVA 54-7) |
Application notes
- For mixed fills, small residuals (~≤3%) of previous mineral/ester/synthetic oils are acceptable; performance benefits of TGOA PD may be reduced when mixed.
- Not compatible with polyglycols. After draining a polyglycol fill, flush thoroughly with mineral oil or flushing oil before filling.
- Observe the recommended operating temperature range and OEM specifications.
Optigear Synthetic 1710 320, Optigear Synthetic 1710-320




