1990 Geo Tracker Oil Type & Capacity
The 1990 Geo Tracker takes 5W-30 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic | SAE 5W-30 (Preferred) (Below -20Deg.F to above 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| Base, Standard | SAE 5W-30 (Preferred) (Below -20Deg.F to above 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, Automatic | SAE 5W-30 (Preferred) (Below -20Deg.F to above 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, Standard | SAE 5W-30 (Preferred) (Below -20Deg.F to above 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
Buy the right oil
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More specs & repair guides for your Tracker
1990 Geo Tracker factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
5.5 quarts (5.2 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1990 Geo Tracker take?
The 1990 Geo Tracker takes 5W-30 motor oil (SAE 5W-30 (Preferred) (Below -20Deg.F to above 100Deg.F), 10W-30 (Above 0Deg.F)), per the factory service manual.
How much oil does a 1990 Geo Tracker take?
The 1990 Geo Tracker holds 4.5 quarts with a filter change.
Can I use synthetic oil in my 1990 Geo Tracker?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Geo Tracker. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.