Chevron Tegra Synthetic Gear 220
ISO VG 220 extreme pressure gear oil
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Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | 209 cSt | ASTM D445 |
| KV100 | 26.9 cSt | ASTM D445 |
| Viscosity index | 164 | ASTM D2270 |
| Pour point | -45 °C | ASTM D97 |
| Flash point | 240 °C | ASTM D92 |
| Density at 15 °C | 0.856 g/cm³ | typical |
Grade checks
- KV40 is inside ISO VG 220 (198–242 cSt).
- Computed viscosity index is 164, within 2 points of the listed 164.
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: Extreme Pressure
- Synthetic: Synthetic
- Base oil: IV PAO
- AGMA class: AS
- FZG fail stage: >=12
- Copper: Unlisted
- Note: Meets AGMA 9005; AGMA lubricant number 5 EP. Synthetic hydrocarbon base.
Sulfur, EP additives and yellow metal
Extreme-pressure gear oils use sulfur compounds so steel teeth do not weld under shock. That same sulfur can tarnish or pit copper, brass and bronze: a bronze worm wheel, a brass cage, a cooler tube. ASTM D130 sits a polished copper strip in the oil and scores the colour. 1A and 1B are the ratings to keep when yellow metal shares the oil. The strip below is that test at room temperature.
How lubricant-induced copper corrosion works
Equivalents
| Oil | Score | Why |
|---|---|---|
| Shell Omala S4 GXV 220 | 93 | same ISO 220, VI 171 vs 164, additive ep, synthetic, pour -42 vs -45, flash within 15 °C, AGMA AS, buyable now |
| Mobil Mobil SHC 630 | 90 | same ISO 220, VI 169 vs 164, additive ep, synthetic, pour -48 vs -45, AGMA AS, buyable now |
| Mobil Mobil SHC Gear 220 | 79 | same ISO 220, VI 180 vs 164, additive ep, synthetic, pour -45 vs -45, flash within 15 °C, AGMA AS |
| Shell Omala S4 GX 220 | 71 | same ISO 220, VI 160 vs 164, synthetic, pour -45 vs -45, flash within 15 °C, AGMA AS, buyable now |
| Castrol Optigear Synthetic PD 220 ES | 62 | same ISO 220, VI 172 vs 164, 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: Chevron, Tegra Synthetic Gear, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Chevron Tegra Synthetic Gear 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 Chevron Tegra Synthetic Gear 220 equivalent?
Published oils in the same application and grade include Shell Omala S4 GXV 220, Mobil Mobil SHC 630, Mobil Mobil SHC 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 Chevron Tegra Synthetic Gear 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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