Castrol Optigear Synthetic PD 220 ES
ISO VG 220 gear oil
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Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | 230 cSt | ASTM D445 |
| KV100 | 30.2 cSt | ASTM D445 |
| Viscosity index | 172 | ASTM D2270 |
| Pour point | -48 °C | ASTM D97 |
| Flash point | 250 °C | ASTM D92 |
| Density at 15 °C | 0.853 g/cm³ | typical |
Grade checks
- KV40 is inside ISO VG 220 (198–242 cSt).
- Computed viscosity index is 172, within 2 points of the listed 172.
Viscosity and temperature
ASTM D341 (Walther) fitted to the published KV40 and KV100. It is an interpolation between those two points, and it is not meaningful below the pour point. Move the control to read a temperature.
Classification
- Category: Gear
- Synthetic: Synthetic
- Base oil: IV PAO
- AGMA class: AS
- FZG fail stage: >=14
- Copper: 1
- Note: Synthetic gear lubricant, PAO-based
Equivalents
| Oil | Score | Why |
|---|---|---|
| Shell Omala S4 GXV 220 | 74 | same ISO 220, VI 171 vs 172, synthetic, pour -42 vs -48, flash within 15 °C, AGMA AS, buyable now |
| Mobil Mobil SHC 630 | 67 | same ISO 220, VI 169 vs 172, synthetic, pour -48 vs -48, AGMA AS, buyable now |
| Shell Omala S4 GX 220 | 63 | same ISO 220, VI 160 vs 172, synthetic, pour -45 vs -48, flash within 15 °C, AGMA AS, buyable now |
| Chevron Tegra Synthetic Gear 220 | 62 | same ISO 220, VI 164 vs 172, synthetic, pour -45 vs -48, flash within 15 °C, AGMA AS |
| Chevron Meropa Synthetic EP 220 | 57 | same ISO 220, VI 164 vs 172, synthetic, pour -51 vs -48, flash within 15 °C, buyable now |
Scores use published typical data. This is not an exact equivalent, and it is not an OEM approval. Confirm the substitute with the machine builder.
Documents
- Product data sheet
- Specs last read from the data sheet on 2026-09-09.
Related: Castrol, Optigear Synthetic PD..ES, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Castrol Optigear Synthetic PD 220 ES an ISO VG 220 oil?
Yes. The catalogue lists it as ISO VG 220, which is a kinematic viscosity of 220 cSt at 40 °C, plus or minus 10 percent (198 to 242 cSt). Confirm the current data sheet before you fill a machine.
What is a Castrol Optigear Synthetic PD 220 ES equivalent?
Published oils in the same application and grade include Shell Omala S4 GXV 220, Mobil Mobil SHC 630, Shell Omala S4 GX 220. The match is from typical data-sheet values, not from an OEM approval. It is not an exact equivalent. Confirm the substitute with the machine builder.
Can Castrol Optigear Synthetic PD 220 ES be mixed with another oil?
Mixing two oils that share a base family is sometimes done and sometimes a mistake. Do not mix this oil with a PAG. For any other mix, follow the maker's change-over guidance and the machine manual.
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