Does the 2021 LaCrosse have a particulate filter?
2 Answers
2021 LaCrosse has launched 5 models, all equipped with particulate filters, complying with the China VI emission standards. A particulate filter is a ceramic filter installed in the diesel engine emission system, which can capture particulate emissions before they enter the atmosphere. It can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. Working principle of the particulate filter: The diesel particulate filter is coated with metals such as platinum, rhodium, and palladium. The black smoke containing carbon particles emitted by the diesel engine enters the engine exhaust particulate trap through a dedicated pipeline. After passing through its densely arranged bag-type filter, the carbon smoke particles are adsorbed on the filter made of metal fiber felt. When the adsorption of particles reaches a certain level, the burner at the end automatically ignites and burns, burning off the carbon smoke particles adsorbed on it, turning them into harmless carbon dioxide emissions. To check whether the 2021 LaCrosse has a particulate filter, you can use the following 3 methods: Check the "Owner's Maintenance Manual" and "Owner's User Manual" to see if there is a particulate filter function. In addition, you can carefully check the fault codes in the manual to see if there is a "particulate filter" fault light indicator; Check the label above the oil filler cap. If the oil cap clearly states 0W-20 grade oil, it means it is equipped with a particulate filter; Check whether there is a cylindrical section on the exhaust pipe behind the three-way catalytic converter. If there is, that is the particulate filter.
To be honest, I recently researched the 2021 LaCrosse and found it indeed comes equipped with a particulate filter, as it's standard for China VI emission-compliant vehicles. This device is installed in the exhaust pipe specifically to capture fine particles from the emissions, which benefits the environment. I've noticed many owners experience frequent clogging issues after repeated short-distance driving, triggering the engine warning light or causing higher fuel consumption. I personally tested the regeneration process after a clogging incident: it requires driving on the highway for at least 20 minutes to raise exhaust temperatures and burn off the accumulated deposits. If left chronically clogged, replacement could cost over 2,000 yuan, so I recommend occasionally taking highway drives to maintain proper flow. From a safety perspective, neglecting timely maintenance might affect performance – don't ignore minor issues.
