Is It Okay to Not Change Transmission Fluid for 8 Years?
2 Answers
It is not advisable to go without changing transmission fluid for 8 years. Transmission fluid primarily serves to lubricate, clean, and seal the transmission. Over time, the fluid quality deteriorates, and impurities may form. Here is some information about transmission fluid: 1. Functions of Transmission Fluid: It is an oil product that keeps the gear system clean, lubricates to prolong the lifespan of transmission components, provides effective lubrication even in low temperatures, and reduces fluid loss under harsh operating conditions. 2. Characteristics of Transmission Fluid: Most transmission fluids on the market are compatible with current automatic transmissions. However, each automatic transmission design has unique technical requirements. Even the same transmission model used in different vehicles may vary in torque, weight, speed, and structure. Therefore, manufacturers specify their own dedicated transmission fluid.
Honestly, going 8 years without changing transmission fluid is quite risky. Transmission fluid is like the lifeblood of the machine—it lubricates gears, cools components, and prevents wear. Over time, it oxidizes and deteriorates, with contaminants building up, increasing friction between parts. I've seen many people delay changes for 7-8 years, only to experience symptoms like transmission slippage, sluggish shifting, or even complete lockup. Repairs can cost thousands, far exceeding the cost of regular maintenance. Manuals typically recommend changing every 40,000-60,000 km or 3-5 years—8 years is definitely over the limit, especially if you drive frequently. Don’t gamble with luck—get the fluid checked at a service center ASAP. If it’s dark, replace it immediately. Trying to save a little now might cost you big later. Long-term neglect also shortens transmission lifespan and affects driving smoothness—safety first.
