Quality: Stick with big name brands and respected smaller ones to ensure you’re getting a high-quality product.Keep that in mind when comparing brands, and opt for multi-packs to save money. Bottle Size: Depending on your vehicle, it could require 6 or more quarts of transmission fluid for a complete flush and change.If you have an older vehicle, check which fluid it’s been running on, and don’t switch fluid types to ensure the best performance. Age of Car: A number of older cars will run better on mineral-oil based transmission fluid, and introducing a synthetic ATF could actually lead to damage.Monolec is one example of a beneficial additive you can look for. While a number of these can be helpful for improving performance and the overall life of both the transmission and the fluid itself, others can be harmful.

Additives: Some synthetic- and mineral-oil-based transmission fluids also contain additives.Moisture, chemicals, and a whole host of other factors can wreak havoc on your transmission, so be sure to change your transmission fluid when recommended to reduce these potential problems. Transmissions can be pretty finicky when it comes to stuff like rust and corrosion. This routine maintenance will help keep your transmission in great working order, and likely extend the life of it in the long run. A well-maintained car is one that gets regular transmission fluid top-offs and a complete flush and replenishment when needed.

You can reduce the costs even further by using a synthetic transmission fluid, which has a longer overall lifespan and a couple of other features that make it last longer.

Changing your own transmission fluid can save you time and money. In the long run, it will also protect your gearbox, likely saving you an expensive repair. When you regularly check and service your car’s transmission fluid, it will result in the smoother movement for your gears. These factors can translate into better fuel economy for your car. Fresh transmission fluid has better resistance to oxidation and meets the lubricating and viscosity standards more easily.

Redline transmission fluid