LG · Laundry · WM4000HBA · Owner's Manual
No. The manual says to never use automotive antifreeze. Use 1 gallon of nontoxic recreational vehicle (RV) antifreeze instead.
Source: LG WM4000HBA Owner's Manual, extracted pages 40-41
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Read This First: Safety Messages and Symbols
Before using the washer, read all instructions and keep them for later reference.
Safety alert symbol and message words
LG WM4000HBA Owner's Manual, extracted pages 3-6Clean the drain pump filter
The washer can fail to drain if the drain pump filter becomes clogged. LG recommends cleaning the drain filter periodically to help prevent clogging from foreign objects.
Before you start - Turn off the washer and unplug the power cord. - Be careful: if there is water in the drum, opening the drain filter can cause water to overflow. - Use a bucket if the drum is not completely drained before you open the drain filter. - Do not use the washer without the drain filter, and do not use it with the drain filter assembled incorrectly. This can cause leaks or malfunction.
LG WM4000HBA Owner's Manual, extracted pages 40-41This answer is only published when it has a reviewed answer status and a source citation back to the manual text.