How much oil?
1.6 T-GDI 4.75 US qt (4.5 L). 1.6 GDI 3.80 US qt (3.6 L). 2.0 GDI 4.23 US qt (4.0 L). Drain and refill.
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In-depth guide
2018 Kia Soul
2018 Soul oil is 4.75 qt for the 1.6 T-GDI, 3.80 qt for the 1.6 GDI, and 4.23 qt for the 2.0 GDI. The grade chart is in the manual.
| Item | Figure |
|---|---|
| 1.6 T-GDI | 4.75 US qt (4.5 L), drain and refill. |
| 1.6 GDI | 3.80 US qt (3.6 L), drain and refill. |
| 2.0 GDI | 4.23 US qt (4.0 L), drain and refill. |
| Classification | The engine-oil classification column prints ILSAC GF-5 or above, API SN or above, or equivalent, and ACEA A5 or above. Footnote: if API service SM is not available, API service SL may be used. |
| Normal interval | The normal maintenance checklist says replace the engine oil and filter every 7,500 miles or 12 months. The same 7,500-mile or 12-month line is printed again for the 1.6 T-GDI. |
| Severe interval | Severe usage: 1.6 GDI and 2.0 GDI every 3,750 miles or 6 months. 1.6 T-GDI every 3,000 miles or 6 months. |
| Viscosity | The viscosity chart is a figure. The 2018 text names 10W-30, 5W-20, 5W-30, and 20W-50 for the 1.6 GDI, and 15W-40, 10W-30, 5W-30, and 5W-40 for the 1.6 T-GDI. Temperature bands stay on that chart. The 2.0 GDI is not given its own grade list on the 2018 chart text. |
Source: owner's manual / last verified 2026-10-16 (2018 Kia Soul owner's manual, recommended lubricants and maintenance (opens in a new tab)).
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2018 Kia Soul owner's manual, recommended lubricants and maintenance (opens in a new tab), Kia Motors America, published 2017-04-06, read 2026-10-16.
Drain pan
For the used oil. No drain-plug torque is printed.
Funnel
For the refill. Stop at the dipstick, not at a guessed extra quart.
Clean rag
The viscosity page says to clean around the drain plug and the dipstick before you open them, especially in dust.
| Item | Figure | Where it comes from |
|---|---|---|
| 1.6 T-GDI | 4.75 US qt (4.5 L), drain and refill. | Recommended lubricants and capacities |
| 1.6 GDI | 3.80 US qt (3.6 L), drain and refill. | Recommended lubricants and capacities |
| 2.0 GDI | 4.23 US qt (4.0 L), drain and refill. | Recommended lubricants and capacities |
| Classification | The engine-oil classification column prints ILSAC GF-5 or above, API SN or above, or equivalent, and ACEA A5 or above. Footnote: if API service SM is not available, API service SL may be used. | Recommended lubricants and capacities |
| Normal interval | The normal maintenance checklist says replace the engine oil and filter every 7,500 miles or 12 months. The same 7,500-mile or 12-month line is printed again for the 1.6 T-GDI. | Normal maintenance schedule |
| Severe interval | Severe usage: 1.6 GDI and 2.0 GDI every 3,750 miles or 6 months. 1.6 T-GDI every 3,000 miles or 6 months. | Maintenance under severe usage |
| Viscosity | The viscosity chart is a figure. The 2018 text names 10W-30, 5W-20, 5W-30, and 20W-50 for the 1.6 GDI, and 15W-40, 10W-30, 5W-30, and 5W-40 for the 1.6 T-GDI. Temperature bands stay on that chart. The 2.0 GDI is not given its own grade list on the 2018 chart text. | Recommended SAE viscosity number |
1.6 T-GDI is 4.75 US qt. 1.6 GDI is 3.80 US qt. 2.0 GDI is 4.23 US qt. All three are drain-and-refill.
The engine-oil classification column prints ILSAC GF-5 or above, API SN or above, or equivalent, and ACEA A5 or above. Footnote: if API service SM is not available, API service SL may be used. The viscosity chart is a figure. The 2018 text names 10W-30, 5W-20, 5W-30, and 20W-50 for the 1.6 GDI, and 15W-40, 10W-30, 5W-30, and 5W-40 for the 1.6 T-GDI. Temperature bands stay on that chart. The 2.0 GDI is not given its own grade list on the 2018 chart text.
The normal maintenance checklist says replace the engine oil and filter every 7,500 miles or 12 months. The same 7,500-mile or 12-month line is printed again for the 1.6 T-GDI. Severe usage: 1.6 GDI and 2.0 GDI every 3,750 miles or 6 months. 1.6 T-GDI every 3,000 miles or 6 months.
None is printed. Clean around the plug before you open it, as the viscosity page says.
2018 Soul owner's manual, Kia chassis file PS, U.S. English. The PDF file was created April 6, 2017. A separate printing line was not used. Capacities match across these two Soul years. The classification sentence and the turbo oil interval do not. Coolant is the coolant guide.
Outbound links only. BaySheet does not sell parts. Confirm fitment on the retailer page. Amazon links are searches for a real part name plus this vehicle. Tool rows do not get a product search. The search is not a part number.
Part
Engine oil for a 2018 Kia Soul
The engine-oil classification column prints ILSAC GF-5 or above, API SN or above, or equivalent, and ACEA A5 or above. Footnote: if API service SM is not available, API service SL may be used.
2018 Soul recommended lubricants (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Tool
Drain pan
For the used oil. No drain-plug torque is printed.
Tool
Funnel
For the refill. Stop at the dipstick, not at a guessed extra quart.
Tool
Clean rag
The viscosity page says to clean around the drain plug and the dipstick before you open them, especially in dust.
1.6 T-GDI 4.75 US qt (4.5 L). 1.6 GDI 3.80 US qt (3.6 L). 2.0 GDI 4.23 US qt (4.0 L). Drain and refill.
The normal maintenance checklist says replace the engine oil and filter every 7,500 miles or 12 months. The same 7,500-mile or 12-month line is printed again for the 1.6 T-GDI.
The maintenance checklist is on the site now. The email list is not sending yet, so this box will not store an address.
Same repair, different model year. Use the page that matches the truck or car in the driveway. A figure on one year is not a figure for the next.
These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.
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