
The Compass 1.4T requires 4.5 liters of engine oil. Engine oil, also known as motor lubricant, serves multiple functions for the engine, including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption and buffering. Taking the 2021 Jeep Compass as an example, its body structure is a 5-door, 5-seat SUV with dimensions of 4424mm in length, 1819mm in width, and 1635mm in height, with a wheelbase of 2636mm and a fuel tank capacity of 51 liters. The 2021 Jeep Compass has a maximum power output of 127kW and a maximum torque of 270Nm, paired with a 7-speed dual-clutch transmission.

I run a specialty repair shop, and I'm extremely familiar with the 1.4T engine in the Compass. Normally, it requires 4.5 liters of 5W-30 full synthetic oil, but don't rigidly stick to this amount. First, add 4 liters, start the engine and let it run for two minutes, then turn it off and wait five minutes before checking the dipstick. Gradually top it up to the middle between the upper and lower marks for the safest approach. Just the other day, a customer added half a liter too much by himself, and the oil seals leaked, leaving the entire undercarriage covered in oil. Remember to change the oil filter as well, otherwise, it's like changing the oil for nothing. The oil pan on this car is designed deep, so it's normal for the old oil not to drain completely. I recommend changing the oil every 8,000 kilometers or so; for those who frequently drive long distances, the Mobil 1 EP series is particularly durable.

Last week, I accompanied my best friend to service her Compass. The work order stated that the 1.4T engine requires 4.5 liters of oil. However, the mechanic was very meticulous in the actual operation: first draining the old oil for half an hour, replacing the new oil filter, then pouring in 4 liters of new oil, starting the engine for two minutes before turning it off to check the dipstick level, and finally topping up with half a bottle of oil to reach the perfect middle mark. I specifically asked about the oil specification, and it must be a fully synthetic 5W-30 oil with ACEA C2 certification. The maintenance manual mentions that it's best to reset the service reminder in the car's computer when changing the oil. A reminder to everyone: overfilling oil can increase fuel consumption, while underfilling is even more dangerous as it may trigger the red warning light.

My Compass 1.4T has run 80,000 kilometers, and I always make sure to change the engine oil during every maintenance. It requires 4.5 liters of 5W-30 full synthetic oil, but the actual amount depends on the oil drainage. A special reminder: use a long-life oil filter, and brands like Mann or Mahle are good choices. The timing of oil refilling is crucial: draining the oil when the engine is hot can remove more old oil, but you must wait two hours for it to cool down before refilling. Once, I was in a hurry and refilled without waiting for it to cool completely, resulting in an inaccurate dipstick reading and having to redo the job. It's recommended to use a graduated measuring cup to add the oil in stages and start checking the dipstick frequently after adding about 3.8 liters. For those driving in Northeast China, remember to switch to winter-grade oil in advance to avoid engine damage during cold starts.


