Shell Omala S4 GX 220
ISO VG 220 anti-wear, r&o gear oil
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|---|---|---|---|
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Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | 230 cSt | ASTM D445 |
| KV100 | 30 cSt | ASTM D445 |
| Viscosity index | 160 | ASTM D2270 |
| Pour point | -45 °C | ASTM D97 |
| Flash point | 250 °C | ASTM D92 |
| Density at 15 °C | 0.881 g/cm³ | typical |
Grade checks
- KV40 is inside ISO VG 220 (198–242 cSt).
- Computed viscosity index is 171 from the stored KV40 and KV100 (ASTM D2270). The listed index is 160, more than 2 points away.
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
- Attribute: Anti-Wear, R&O
- Synthetic: Synthetic
- Base oil: IV PAO
- AGMA class: AS
- FZG fail stage: >=14
- Copper: Unlisted
- Note: Synthetic, gear oil
Equivalents
| Oil | Score | Why |
|---|---|---|
| Chevron Meropa Synthetic EP 220 | 86 | same ISO 220, VI 164 vs 160, additive aw/ro, synthetic, pour -51 vs -45, flash within 15 °C, buyable now |
| Chevron Meropa EliteSyn XM 220 | 72 | same ISO 220, VI 161 vs 160, additive aw, synthetic, flash within 15 °C, AGMA AS |
| Chevron Tegra Synthetic Gear 220 | 66 | same ISO 220, VI 164 vs 160, synthetic, pour -45 vs -45, flash within 15 °C, AGMA AS |
| Mobil Mobil SHC 630 | 61 | same ISO 220, VI 169 vs 160, synthetic, pour -48 vs -45, AGMA AS, buyable now |
| Castrol Optigear Synthetic PD 220 ES | 58 | same ISO 220, VI 172 vs 160, synthetic, pour -48 vs -45, flash within 15 °C, AGMA AS |
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: Shell, Omala S4 GX, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Shell Omala S4 GX 220 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 Shell Omala S4 GX 220 equivalent?
Published oils in the same application and grade include Chevron Meropa Synthetic EP 220, Chevron Meropa EliteSyn XM 220, Chevron Tegra Synthetic Gear 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 Shell Omala S4 GX 220 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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