About 6.0 quarts (5.7 liters) of engine oil, including a new filter, is the standard capacity for a full oil change on the 2020 Tacoma with the 3.5-liter V6.
Official specification and practical guidance
The Toyota service data for the 3.5L V6 used in the 2020 Tacoma lists an oil capacity of 6.0 quarts (5.7 liters) when the engine is fully drained and a new oil filter is installed. This is the baseline figure technicians rely on during maintenance.
In real-world service, you may encounter small variations depending on factors such as the exact oil filter, the presence of optional equipment, or differences in how thoroughly the system is drained. Always verify the final oil level with the dipstick after adding oil and run the engine to operating temperature, then re-check and top off to the full mark if needed.
Oil grade guidance: follow the owner's manual for the correct viscosity. Toyota commonly recommends a synthetic oil in the low-viscosity range for modern 3.5L engines, but climate and warranty requirements can influence the choice. Check the filler cap and the manual for the approved grade and capacity specifics for your vehicle.
Summary
For a 2020 Toyota Tacoma with the 3.5L V6, plan to purchase and use about 6.0 quarts (5.7 liters) of engine oil for a full change with a new filter. Always verify with the dipstick after filling and consult the owner's manual for the exact oil grade recommended for your climate and driving conditions.