2021 Subaru Ascent Oil Type & Capacity: 0W-20 (4.8 quarts)
The 2021 Subaru Ascent takes 0W-20 motor oil — 4.8 quarts with a filter change, per the factory service manual.
Factory-spec answer
0W-20 — 4.8 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base | ILSAC GF-5, API - SN PLUS, 0W-20 Synthetic Oil | 4.80 QTS. | 4.50 QTS. | If 0W-20 synthetic oil is not available, 5W-30 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change. |
| Limited | ILSAC GF-5, API - SN PLUS, 0W-20 Synthetic Oil | 4.80 QTS. | 4.50 QTS. | If 0W-20 synthetic oil is not available, 5W-30 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change. |
| Premium | ILSAC GF-5, API - SN PLUS, 0W-20 Synthetic Oil | 4.80 QTS. | 4.50 QTS. | If 0W-20 synthetic oil is not available, 5W-30 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change. |
| Touring | ILSAC GF-5, API - SN PLUS, 0W-20 Synthetic Oil | 4.80 QTS. | 4.50 QTS. | If 0W-20 synthetic oil is not available, 5W-30 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change. |
More factory specs & repair guides for your Ascent
🛞 2021 Subaru Ascent Tire Size & Pressure →🌧️ 2021 Subaru Ascent Wiper Blade Sizes →💡 2021 Subaru Ascent Light Bulb Sizes →📖 2021 Subaru Ascent Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
11.7 quarts (11.07 L) — SUBARU Super Coolant
Frequently asked questions
What type of oil does a 2021 Subaru Ascent take?
The 2021 Subaru Ascent takes 0W-20 motor oil (ILSAC GF-5, API - SN PLUS, 0W-20 Synthetic Oil), per the factory service manual.
What is the oil capacity of a 2021 Subaru Ascent?
The 2021 Subaru Ascent oil capacity is 4.8 quarts with a filter change, or 4.5 quarts without changing the filter.
How often should I change the oil in my 2021 Subaru Ascent?
Most 2021 Subaru Ascent owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Subaru recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2021 Subaru Ascent?
Yes. 0W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2021 Subaru Ascent. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.