Kohler is a trusted name in small engine manufacturing, particularly for residential and commercial mowers, generators, and utility vehicles. The 18 HP Kohler engines are known for their durability, power efficiency, and easy maintenance, making them a favorite among homeowners and professionals alike.
18 HP Kohler Engine Oil Capacity
| Kohler Engine Model | Oil Capacity (Without Filter) | Oil Capacity (With Filter) | Oil Type |
|---|---|---|---|
| Command PRO CH18 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command PRO CH18S | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command PRO CH550 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command PRO CH570 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command PRO CH620 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command CV18 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Command CV18S | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
| Courage SV530 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Courage SV540 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Courage SV541 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Courage SV590 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Courage SV600 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Courage SV601 | 1.3 quarts (1.2 L) | 1.6 quarts (1.5 L) | SAE 10W-30 |
| Magnum M18 | 1.3 quarts (1.2 L) | 1.5 quarts (1.4 L) | SAE 10W-30 |
| Magnum Twin MV18 | 1.3 quarts (1.2 L) | 1.5 quarts (1.4 L) | SAE 10W-30 |
| 7000 Series KT715 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| 7000 Series KT725 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| 7000 Series KT730 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| 7000 Series KT735 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| 7000 Series KT740 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| 7000 Series KT745 | 1.5 quarts (1.4 L) | 1.8 quarts (1.7 L) | SAE 10W-30 |
| Triad OHC OHV18 | 1.5 quarts (1.4 L) | 1.9 quarts (1.8 L) | SAE 10W-30 |
Related Kohler Engine Oil Chart(A to Z Guide)
Recommended Oil Types for Kohler Engines
- SAE 10W-30: Ideal for most climates.
- SAE 30: Best for warmer temperatures.
- Synthetic Blend: Offers longer engine life.
Factors That Influence Oil Capacity
- Oil Filter: Models with an oil filter may require additional oil.
- Engine Design: Vertical vs. horizontal shaft configurations hold different amounts.
- Model Year: Older models may differ slightly from newer ones.
- Crankcase Volume: Some engines come with extended sump capacities.
Related Kohler 7000 Series 22HP Oil Capacity(Ultimate Guide)
How to Check Your Oil Level Properly
- Let the engine cool for 10 minutes.
- Remove the dipstick and wipe it clean.
- Reinsert it fully and pull it back out.
- Check the level between the low and high marks.
How Often to Change Oil in Kohler Engines
Changing your oil regularly prevents wear and ensures performance.
Oil Change Frequency by Hours of Use
- First 5 hours: Initial oil change (break-in period).
- Every 25-50 hours: Regular use.
- Every 100 hours: Synthetic oil.
If you store your mower for winter, change the oil before and after the season.
Related Kohler 25 HP Engine Oil Type(By Manufacturer)
Step-by-Step Oil Change Guide
- Run the engine for 5 minutes to warm the oil.
- Turn off engine and place drain pan underneath.
- Remove oil drain plug and let oil drain completely.
- Replace plug and install new oil filter.
- Refill with recommended oil to the proper level.
- Check dipstick and test run engine.
Signs You’re Using the Wrong Oil
- Engine overheating
- Excessive smoke
- Oil-burning smell
- Low oil pressure light
- Loud knocking sounds
Related Cub Cadet Kohler Engine Oil Capacity Chart(Models A to Z)
FAQs
How many quarts of oil does a KOHLER 18 HP engine take?
Most 18 HP Kohler engines take between 1.5 to 2.0 quarts of oil, depending on the model and whether it has an oil filter installed. For example:
- Without oil filter: ~1.5–1.7 quarts
- With oil filter: ~1.8–2.0 quarts
How much oil does a KOHLER engine hold?
The oil capacity of a Kohler engine varies based on model and horsepower:
- Small engines (e.g., 15–19 HP): 1.5 to 2.0 quarts
- Larger commercial engines: up to 2.5+ quarts
Related What Type of Oil for Kohler Command 13 HP Engine(Recommended)
How much oil for KOHLER 5400 18 HP?
The Kohler 5400 Series 18 HP engine typically holds:
- 1.5 quarts without an oil filter
- Up to 1.8 quarts with an oil filter
Use SAE 10W-30 oil for most climates, unless otherwise specified by the manual.
What oil does a KOHLER Command Pro 18 take?
The Kohler Command PRO 18 HP (CH18, CV18) models recommend:
- SAE 10W-30 for year-round use
- SAE 30 in warmer climates above 32°F (0°C)
- Kohler also recommends using API Service Class SJ or higher oils.
What oil does an 18 HP Kohler engine take?
Most 18 HP Kohler engines, including Command, Courage, and 5400 Series models, take:
- SAE 10W-30 (all-season)
- SAE 30 (for temperatures above freezing)
- Always choose a high-quality detergent oil with the correct API service classification (SJ or newer).
How much oil does a Kohler 19 HP engine take?
Kohler 19 HP engines, such as the Courage SV590 or Command CV490, typically require:
- 1.5–1.6 quarts without filter
- 1.8–2.0 quarts with filter
