How to Fill Oil in Car Mechanic Simulator 2021 (Step by Step + No Oil Fix)
To fill oil in Car Mechanic Simulator 2021, open the hood, find the round oil filler cap on top of the engine (it shows as “Oil Fill Plug” or similar when you hover over it), click it and choose the option to add or fill oil. An oil bottle appears and starts pouring. Hold the button and watch the level, and stop when it is between the minimum and maximum marks. If the game still says there is no oil, pour a little more, remove any part blocking the filler (often the intake), or drain the old oil first if the job is an oil change.
Filling oil is one of the first jobs you meet in Car Mechanic Simulator 2021, and it trips up a lot of new players. The bottle pours slowly, the level is easy to misjudge, and some engines hide the filler cap under other parts. Getting it wrong can stop a job from completing.
This guide walks you through filling oil step by step, explains how to do a full oil change, and covers the fixes for the common “no oil” problem.
How to Fill Oil in Car Mechanic Simulator 2021
Walk to the front of the car and use the interaction to open the hood, or open it from the car’s menu. Make sure you can see the top of the engine.
Look for a round cap on top of the engine, usually on the valve cover. Hover over it and the game names it as the oil fill plug or filler. Rotate the camera if you cannot see it.
Click the cap and pick the add or fill oil option. An oil bottle appears over the filler.
Hold the action button to pour. The level rises slowly at first. Many players release once the bottle starts to tip and then top up in short bursts.
Release when the level sits between the minimum and maximum marks. Slightly above the middle is safest for jobs that check the level.
Open the job or order screen and confirm the oil task is marked as done before you hand the car back.
How to Do a Full Oil Change in CMS 2021
When a customer order asks for an oil change, filling alone is not enough. The usual order is:
- Put the car on a lift and raise it.
- Find the oil drain plug on the oil pan underneath and choose to drain the oil.
- Remove the old oil filter and fit a new one (buy it in the parts shop if you do not have one).
- Lower the car, open the hood and fill fresh oil through the filler cap as above.
- Check the level and confirm the order is complete.
Players of the older games can compare with our guide on where to get oil in Car Mechanic Simulator 2018.
“No Oil in the Engine” Error: Fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Game says no oil after filling | Stopped pouring too early | Pour a little more, aiming above the middle mark |
| Cannot click the filler cap | A part is in the way | Remove the intake or engine cover that blocks it |
| Fill option does not appear | Oil change job needs draining first | Drain the oil from below, then fill |
| Cannot find the cap | Unusual engine layout | Rotate the camera, use examine mode, check the engine cover |
| Oil level drops again | Leaking or missing parts | Check the oil pan, filter and drain plug are fitted |
| One car will not accept oil | Possible game bug on that model | Save, reload the game and try again |
Car Mechanic Simulator vs Real Life
The game simplifies the job, but the basics match real cars: drain from the oil pan, replace the filter, fill through the cap on top of the engine and stay between the dipstick marks. In a real car, the oil type and capacity matter, and overfilling can damage the engine. If you want to try it for real, read how to change oil in a car and how to check your oil level.
- Pour in short bursts near the end so you do not overshoot.
- Read the job card carefully: “oil change” and “add oil” are different tasks.
- Keep a few spare oil filters in your inventory to save trips to the shop.
- If a job will not complete, check every fluid, not just oil.
In Car Mechanic Simulator 2021, open the hood, click the oil filler cap, choose to add oil and hold to pour until the level is between Min and Max. For oil change orders, drain the oil and replace the filter first. If the game still says there is no oil, pour a little more or remove the part blocking the filler.
Car Mechanic Simulator Oil FAQs
Open the hood, click the oil filler cap on top of the engine, choose the add oil option and hold to pour until the level is between the minimum and maximum marks.
You do not need to buy a bottle for normal jobs. The oil bottle appears when you select the fill option on the filler cap.
Usually you stopped pouring too soon. Add a little more oil, or drain and refill if the order is an oil change.
Raise the car on a lift, find the drain plug on the oil pan underneath and choose the drain option.
The game is forgiving, but aim for between Min and Max to make sure jobs complete. In a real car, overfilling can cause damage.
On some engines another part, such as the intake or an engine cover, blocks it. Remove that part first.
- Open hood, click the oil filler cap.
- Choose add oil and hold to pour.
- Stop between Min and Max.
- Oil change: drain and new filter first.
- “No oil” error: pour a bit more.