The Mazda3 Axela comes factory-filled with 0W-20 full synthetic engine oil. This viscosity grade is optimally matched to the engine, allowing it to perform at its maximum potential. Engine oil viscosity changes with temperature fluctuations, so special attention must be paid to its performance under both low and high temperature conditions. For example, in 5W-30 oil: the first number indicates cold temperature fluidity - 5W means it can withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, resulting in smoother cold starts. The second number represents the oil's kinematic viscosity at 100°C - higher values indicate better ability to maintain viscosity under high temperatures, which can be understood as providing superior lubrication performance in hot conditions. The Mazda3 Axela oil change procedure is as follows: Wait for the engine to cool down, allowing oil to drain back to the oil pan; Loosen the drain plug with a wrench and collect the old oil in a drain pan until flow stops completely. Start the engine for 30 seconds to drain remaining oil from main galleries; Remove the oil filter using a special wrench; Apply fresh oil to the new filter's gasket and hand-tighten clockwise; Add new oil through the valve cover filler port - typically about three-quarters of a standard oil container; Run the engine for 5 minutes and check for leaks at the drain plug and filter. Address any leaks if found; After stopping the engine, check the oil level using the dipstick to ensure it's within the specified range.
