Choose your Geo model below, then use the live AMSOIL lookup result for the current oil and fluid recommendation for your year and engine. The tables here are a shortcut into AMSOIL's current lookup, not a replacement for the live result. Add Preferred Customer membership in the same cart as your order to unlock qualifying member pricing.
Geo vehicles span a broad range of engine designs and operating conditions, and AMSOIL maintains the matched recommendation for every covered year and engine.
AMSOIL keeps the Geo recommendation in its live lookup, where the current product match can change as formulas and factory requirements change. Signature Series, XL, and OE cover different maintenance styles, from the longest-drain choice to factory-interval service. Pick a model below, then confirm the live result before ordering.
Frequently asked questions
Which AMSOIL oil is recommended for a Geo?
It depends on the model, year, and engine. AMSOIL maintains a live recommendation per configuration. Pick your Geo model in the grid above and click through to the AMSOIL lookup result for your exact engine.
Does AMSOIL meet Geo factory specifications?
Yes. AMSOIL formulates its current Signature Series, XL, and OE motor oils to meet or exceed Geo factory specifications across the covered range where the formula qualifies. The lookup tool returns the product matched to the spec for your specific year and engine.