Castrol Transmax Dex / Merc ATF

This post “Castrol Transmax Dex / Merc ATF Reviews / Assessment”, covers Castrol Transmax Dex / Merc ATF, features of castrol transmax Dex/ Merc, Castrol Transmax Dex / Merc ATF pros, Castrol Transmax Dex / Merc ATF review and lots more.

Our best recommendation is this Castrol automatic transmission fluid. It has improved friction durability for smooth shifting, has undergone numerous customer tests, and has consistently produced high-performance results. Based on the particular make and model of your vehicle, Transmax might be an option for you because it fulfills all Mercon demands and also the Dexron, Dexron III, Dexron-III H, IIE, and II requirements. If your car needs a Mercon, you can also use this ATF in your power steering.

This makes it the perfect product to use to top off both your gearbox and power steering fluids. The huge bottle size is likewise advantageous because you probably only require one, resulting in less plastic waste. Always guarantee compatibility by consulting the instruction booklet for your car. The only thing about this particular fluid that we didn’t enjoy was the unclear labeling. It says on the label that it’s for domestic cars, but that’s erroneous because this fluid can also be used in imports as long as those vehicles need Dex/Merc fluid.

Product Details

The complexity of automatic transmissions has increased, increasing the demands on transmission fluids. In actuality, the automatic transmission is arguably the most intricate mechanical part of a car. The automatic transmission smoothly changes gears and transmits engine power to the drive wheels by combining electrical and mechanical systems, hydraulics, and computer processors.

There are three common types of automatic transmissions in use today. the step-type transmission, which is the most popular, particularly in the US; the dual clutch transmission (or DCT); and the continuously variable transmission (or CVT). The step-type transmission is made up of so many major parts. The unit’s multiple uses for the pressurized transmission fluid are supplied by the pump. The vehicle’s chosen gear ratios are provided by the planetary gear sets. The gear sets are engaged and disengaged by clutches or “clutch packs.” The torque converter increases the torque during beginning acceleration when it connects the transmission to the engine. It employs two fluidly coupled turbines that spin autonomously but together when the engine ceased, enabling for smoother acceleration as the gears are changed.

The “brain” of the transmission, the Mechatronics is a sophisticated network of ports, valves, and electronics that regulates every aspect of the transmission.

The Automatic Transmission Fluid, or ATF, is the only element of the overall system that is essential for all of these parts to function effectively together. It functions as a hydraulic fluid to activate clutch packs and change gears. For the Planetary Gear sets, it serves as a corrosion inhibitor and wear protector. Even in precise valve assemblies, it must flow smoothly from minus 40 degrees Fahrenheit (4.4 degrees Celsius) to about 400.

The most significant characteristic of an ATF may be its ability to accurately manage friction in the clutch packs and sustain it during the drain period whilst lubricating hundreds of moving parts even at extremely high temperatures and pressures. Therefore, choosing the proper ATF is essential for the functionality and longevity of your gearbox.

03520C TRANSMAX DEX/MERC ATF from Castrol


Older Ford and General Motors vehicles’ gearboxes and power steering systems, as well as any other vehicle where the product’s requirements are advised, should use Castrol Transmax DEX/MERC Multi-Vehicle Transmission Fluid.

Product Advantages

  • Improved friction longevity for efficient transmission performance
  • Improved heat protection for motorway and city driving
  • Unsurpassed oxidation resistance to stop viscosity rises

User inquiries and responses


Will it work in a 2000?


• A 2000-model Ferrari? A 2000-model Honda s2000? A 2000-model Mini Cooper?

Maybe the solution isn’t in the solution. Maybe the question itself has the solution. As in, if you can’t pose the right query, why would you touch your car?


Can ATF-Z1 be replaced by this fluid?


• Dex3 with a friction modifier is ATF-Z1. This will meet that requirement. You could be better off utilizing a fluid with a greater viscosity, such AMSOIL ATF, as the trans ages and wears. If you are performing a drain and refill, the first one involves replacing new fluid by roughly 44%. The third will get you to 85%. Considering dilution rate versus volume


Can a 1998 Jeep Cherokee Auto 4WD use this?


• This is a link to Castrol’s list of authorized automobiles! 380257EDC004D3B0A/$File/BPXE-9FT8RL.pdf


Function properly in a 2005 Mazda 3?


Look for the ATF page on the Castrol website, after which click the link to the Product Description. Here anyway, you will discover a list of car manufacturers and the ATF that this Castrol is suggested for. Castrol proposes it for the Mazda M-V fluid, thus I will shortly be converting to it because I have a 2008 Mazda 3.

Best ratings

smith, Lee

Alert! This review may be found under Castrol transmission fluids of other varieties. Only the Castrol 06811-6PK Transmax ATF Black CVT Transmission Fluid is being reviewed here. Using standard AT fluids will seriously harm CVTs! My 2017 Nissan Altima has 40K miles on it, to start. No serious problems, such as complaining or slipping. So, I wasn’t really anticipating a significant change here. Because of all the horror stories we are hearing about Nissan CVTs, I was more inclined to want to perform the repair as a preventative step. I used a pump, which you can get from Amazon here, to suck four quarts out of the CVT after warming the vehicle for perhaps ten minutes. I added fluid using the same fill tube, started the vehicle. And then drove it through all the gears a few times.

I then went for a trial run. After a few kilometers, there wasn’t much of a difference, and then I noticed the shifts were scarcely audible. a lot smoother Then I observed something else that really wasn’t what I was expecting. Gas mileage is something that I find really important.

As far back as I can remember, my automobile rotates 1.5 RPMs at 55 mph. However within a short distance of driving. At 55, it slowed to 1.3 RPMs, and MPG started to rise. I wasn’t even aware that the transmission was slipping somewhat before! Guys/gals, I trust this review is helpful.

Fomenko, Andriy

drained and refilled the CVT on a 2007 Nissan Altima with 90K miles using this fluid.

I was able to empty 5 quarts, or roughly 50% of its capacity, and then I substituted it with Castrol Transmax.

At 60K miles, this car’s CVT fluid was changed to Idemutsu fluid (said to be supplied by Nissan OEM), but I did not experience the same reduction in vibration at idle and while igniting the engine as I experienced with Castrol.

It is unquestionably SO MUCH BETTER.

I’m going to drain and refill the Nissan CVT fluid every 30K miles because it is relatively simple to perform and because the CVT is prone to wear and failure if fluid is not frequently cleansed.

— revision made in December 2018

2007 Altima still works well, at 110K miles

I applied this fluid to my other 2012 Altima and got the same excellent results.

Gross Grandpa

A 2013 Nissan Murano SL, complete with all the bells and whistles, is mine exclusively.
The vehicle still has 70k miles on it, all on the highway, and it still runs like new. Dealer demanded $250 for a CVT fluid flush/exchange during a recent servicing. What???

The transmission fluid in my car is meant to last forever. Naturally, I declined, but it turns out I was completely mistaken.

I opted to do it myself after some study. If you are performing a drain and refill, it is usually less complicated than performing an oil change.

Nissan original CVT fluid accounted for 4 quarts once the drain nut was removed. DO YOU NEED TO MEASURE IT? Add Castrol CVT fluid that is NS-3 certified to 4 liters.

There is no miracle chemical in the OEM fluid that costs near to $20 a quarts.

Why would you pay that much for CVT oil? After 70k miles, I couldn’t believe my eyes when I saw that dark and odorous fluid emerge from my transmission; I’m sure the fluid smelled of burned carbon.

The CVT fluid needs to be changed every 30k miles, I thought. Red Castrol CVT fluid is readily visible.

View the images.

My 2010 Altima has had a noticeable highway whine emanating from the CVT for a few years now, perhaps since 110k miles. Since I was experiencing more complaints, I took it in for warranty service at 119k to determine if the cvt was malfunctioning. They informed me that the fluid and transmission were good and that it was a “TCM update”. It’s unfortunate that they didn’t replace for free, but okay. I kept moaning and had problems over time.

After a year and about 140k miles, I was experiencing HORRIBLE loud wining, studdering, overheating, limp mode, slippage, power loss, and other issues on the highway, so I looked online. Based on numerous success stories, I chose to purchase this trans fluid, and I’m glad I did! Additionally, I added a trans cooler, which appears to have made a big difference even with only draining 6 qts after dropping the pan once.

After more than 1000 miles, I intend to perform another drain and fill before replacing the pan gasket. All is well thus far. I can now go at speeds of 90 mph or more on Florida’s roadways without becoming too hot or complaining.

It took me perhaps an hour to drain and fill the cooler, and two hours to mount the cooler and run the hoses, but pretty much every problem was completely resolved. Remember that, with the cooler installed, you will require about 6.5 qts to fill the system.

Make sure to do it. Avoid delaying like I did because the longer it lasts, the more harm is done, and fixing it costs money.

Nooen T.

I was concerned that I had damaged my transmission after replacing it. The transmission in my car kept slipping and shifting erratically. But, my transmission seems confident once more after traveling roughly 500 miles. It nearly seems as though the fluid had to enter.

In any event, I’m happy to find a Nissan NS-2 substitute that is far less expensive.

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