Home › Knowledge Library › Shell Omala S4 WE 220 vs Shell Spirax S3 AX 80W-90 — what is the difference?
Shell Omala S4 WE 220 vs Shell Spirax S3 AX 80W-90 — what is the difference?
Both products sit in the Gear & Bearing Oils group and are regularly considered as alternatives to one another. The difference is mostly the viscosity grade, and therefore the load and speed profile of the equipment they suit.
| Property | Shell Omala S4 WE 220 / Shell Spirax S3 AX 80W-90 |
|---|---|
| Brand | Shell Marine / Shell Marine |
| Sub-category | Gear & Bearing Oils |
| Viscosity grade | ISO VG 220 / SAE 80W-90 |
| Reference price | 3 939 USD / 1 587 USD |
| Sales unit | per 100 L |
Which one to choose
The viscosity window stated by the equipment builder decides. If both products fall inside it, favour the higher grade for high load and high ambient temperature, and the lower grade where cold starting and low friction matter more.
Where it is used
Gear oils have to carry the high contact pressure on tooth flanks. The EP additive package delays pitting and micropitting, and synthetic products give a clear life advantage at high temperature.
For bearing and circulation oils the priorities are heat removal, water separation and long service without deposits. Circulation systems in paper, steel and power plants are typical applications.
Price and availability
Contact us for current pricing, stock availability and delivery times for this product group.
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