How often should the transmission oil of a 4.2-meter truck be changed?

1 Answers
KendraLee
07/29/25 6:01pm
Transmission oil is generally changed every 3 years or 60,000 kilometers, depending on whether the transmission oil has deteriorated. Below are specific details about deteriorated and normal transmission oil: 1. Deteriorated: With the engine idling and the gear selector in the P position (N position for Nissan vehicles), pull out the dipstick to observe the oil on it. Drop a small amount of oil onto a filter paper. If the oil appears black, leaves obvious sludge on the filter paper, emits a strong odor or burnt smell, appears cloudy when a few drops are placed on a steel plate, or feels gritty and has poor viscosity when rubbed between fingers, it indicates deterioration. 2. Normal: Odorless, semi-transparent, red or yellow in color, ATF oil is clear with minimal impurities (visible to the naked eye), allowing for an appropriately extended maintenance cycle.
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