Advice on which transmission fluid to use

I recently put the Amsoil oil into the engine and my car ran great. So, I was thinking to put the Amsoil z1 ATF into transmission. This is recommended for Honda. However, I was told at the Acura dealership that I should not do it. According to them, this could damage the transmission. What do you think?
Experienced mechanics share their insights in answering this question :
Hi there. It is fine to use this in the engine, but I would not use it in the transmission. This transmission is very temperamental, and if you do not use the genuine Honda fluid you will almost certainly have transmission issues. I would not use anything but the recommended fluid in your car. If you would like a transmission fluid service done for you, a certified technician from YourMechanic can come to your home or office to perform this task using the correct correct fluid for your car.

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FRAM – Full Synthetic Dexron VI Automatic Transmission Fluid: 1 Quart (Part No. F426)
Idemitsu ATF Type H-Plus is formulated specifically for use in Honda and Acura vehicles where Honda ATF Z-1 or DW-1 fluid is specified.
Commonly recommended manual transmission fluid formulations include SAE 80W, 75W-90, 80W-90 and SAE 90. In some cases, a multi-grade engine oil or automatic transmission fluid may be recommended. However, a manual transmission fluid is typically the most optimal for manual transmissions.
FRAM – Full Synthetic Dexron VI Automatic Transmission Fluid: 1 Gallon (Part No. F426-1G)
Dexron is the trade name for a group of technical specifications of automatic transmission fluid (ATF) created by General Motors (GM).
It should be nearly clear, with a pink hue. If it looks dirty or has a burnt smell, your transmission fluid needs to be replaced. Use a rag to wipe off the dipstick. Then insert it back into the stem.
Idemitsu is the OEM supplier for Honda DW-1.
The Acura transmissions are: Dual Clutch Transmission (DCT) – Built to truly maximize your Acura performance through millisecond gear changes, all through paddle shifters on the steering wheel.
Best Dexron Transmission Fluid—STP Dexron VI Automatic Transmission Fluid. STP Dexron VI Automatic Transmission Fluid is a perfect choice for vehicles that use Dexron II, III, or Dexron VI. It`s also suitable for certain Japanese vehicles, and vehicles that require Toyota WS and Toyota T-IV fluid.
A straightforward answer would be No because gear oil and transmission fluid target different types of transmissions or mechanical environments. Gear oil is a lubricant for manual transmission while transmission fluid is a lubricant for the automatic transmission of semi-trucks and other heavy and light-duty vehicles.
`ATF DW-1` is the official Honda Replacement for ATF-Z1.
The RL was the flagship of the marque, having succeeded the Acura Legend, and was replaced in 2013 by the Acura RLX. All models of the Legend, RL and RLX lines have been adapted from the Japanese domestic market Honda Legend. The model name “RL” is an abbreviation for “Refined Luxury.”
Valvoline Dexron VI/Mercon LV ATF is the full-synthetic automatic transmission fluid that has been uniquely engineered to meet and exceed the requirements of the General Motors Dexron VI specification and is officially licensed and approved by GM.
ATF Dexron III is an automatic transmission and power steering fluid. It is recommended for use in General Motors automatic transmissions pre 2005 and in other automatic transmissions where Dexron (II or III) or Mercon performance is required.
ATF Type III (H) is recommended for the following uses: when DEXRON-III(H), DEXRON-III(G), DEXRON-II(E), DEXRON-II, or Type A Fluids are required, in all automatic transmissions built by GM that do not require DEXRON-VI, and can also be used in some hydraulic and compressor systems where excellent low temperature flow …
DEXRON-III is the latest Dexron official approval. Motul`s Technosynthese base allows to be resistant at very high temperature. Comes in 2 Liter bottles and can be mixed with any Dexron oils. This fluid is colored red.
5W-30 (All TEMPS) – SAE 5W-30 is preferred.
ATF +4 is a synthetic fluid for finely-tuned transmissions, so if you use a non-synthetic ATF instead of ATF +4 in a car or truck that calls for it, you could damage the transmission. You may use ATF +4 in most applications that call for older Dexron and Mercon fluids.
5W-30 (All TEMPS) – SAE 5W-30 is preferred.
2000. In the second year of production, the Acura TL was given a few more features, including a 5-speed automatic transmission with SportShift. The added gear allowed for slightly better fuel economy and acceleration when compared to the previous 4-speed automatic transmission with SportShift.
Automatic Transmission Fluid (ATF DW-1®)

Automatic transmission fluid provides hydraulic power to perform transmission functions, such as shifting gears. It also lubricates and cools internal components.

2000. In the second year of production, the Acura TL was given a few more features, including a 5-speed automatic transmission with SportShift. The added gear allowed for slightly better fuel economy and acceleration when compared to the previous 4-speed automatic transmission with SportShift.
If you regularly drive your vehicle under these conditions, have the transmission fluid changed at 60,000 miles (100,000 km), then every 30,000 miles (48,000 km).

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Can I use alternative Transmission fluid to the quotes recommended fluid if i’m bringing my own parts?
ANSWER : I would recommend buying the correct fluid. The reason is because I want to make sure your car is taken care of and is running as long as possible. You wouldn’t want to put something foreign in your car that it may not accept unless you’re willing to accept risks. Different fluids have different chemicals in it. It may cost more right now, but you won’t have to spend money buying a new transmission or having one rebuilt.

There is automatic transmission fluid in a manual transmission. Is it okay to leave or do I need manual transmission fluid?
ANSWER : This would depend on what the manufacturer recommends. Many manual transmissions do take automatic transmission fluid. If your transmission has ATF in it, it is very likely that it is supposed to have that in there. If not, it is likely that the transmission would not function properly with the wrong fluid. Many manual transmissions will also take engine oil as a lubricant. The best way to know for sure is to check your owner’s manual or call your local General Motors dealership to inquire.

New cars don’t have transmission fluid dipsticks Transmission fluid changing
ANSWER : That’s a very good question. The reason they have gone with no dipsticks is because they don’t want people messing with transmissions other there at the dealership. Some cars went through that a couple of decades ago. They make it a very involved, convoluted process all through, in order to change the fluid on these modern cars. They have special adapters you have to put. Some of them have to have scan computers in order to read the data and what’s in there, and then be able to change it. A lot of these companies claim that this new fluid is the "lifetime" fluid.

Most new use synthetic fluid can last a long time but any fluid is going to get dirty and wear out over time. I would change it at least every 80,000 – 100,000 miles but if you’ve got one that is really hard to change, you are better off hiring a mechanic to do it.

On some of the cars, it would be too hard for the do-it-yourself because of all that equipment you need. The professional mechanics already have that. Just call any good mechanic, like one from YourMechanic, and they will be able to perform a transmission fluid service for you.

Need to have transmission service on 2014 Nissan Sentra SV but would like to use only fluid manufactured by Nissan? How can I?
ANSWER : To answer your most important question first, you can absolutely specify that only genuine NIssan OEM dealer supplied transmission fluid (as well as any applicable filter) be used in your vehicle. Generally speaking, OEM parts are preferred and, in many cases, are the only way to avoid headaches. If you are providing the fluid, you can simply eliminate the "parts component" of the quote (there is a delete all parts option in the quote, leaving you only with labor charges). If you desire that YourMechanic procure the fluid, it might be easier to simply call in your service request and just make it clear on the phone that only OEM Nissan fluid is to be used. To obtain service, please call YourMechanic’s request for service line at 1-844-249-6752. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Hello, I was curious to know how much would a transmission fluid change cost for a 2013 Scion XB? What type of fluid do they use?
ANSWER : Hi there. The transmission fluid that your vehicle calls for is Genuine Toyota ATF T-IV Transmission Fluid. If you have letters to have your vehicle brought to the dealership for a recall, there is no charge to you to fix a recall.

Billing question sent to CS for the cost of servicing the transmission on a 2013 Scion xB with a L4-2.4L engine and automatic transmission.

My car is leaking transmission fluid – I can’t diagnose the leak
ANSWER : Based on the NHTSA database covering consumer complaints, as well as government mandated recalls and factory service bulletins, for your specific year, make and model, I do not see evidence of widespread complaints about transmission fluid leaks. Such leaks are, in fact, common in transmissions made by any car company, particularly if the transmission is older than say 10 years. There is a manual shaft seal, oil pan gasket, output shaft seals, case seals, torque converter seal (inaccessible) and so forth all of which are potential leak points on your transmission.

If you want to identify and resolve these leaks, certainly a certified Mechanic from YourMechanic could come out and perform a transmission leak inspection and let you know where the leak points are and what it will cost to resolve them.

Transmission fluid leak, power loss, extremely high fuel usage.
ANSWER : Hello – I would focus on the transmission issue first. If you have the transmission fluid back to its proper level, check for problem codes, whether the Check Engine light is lit or not. An auto parts store will read these codes for you for free. Low fluid level can easily result in poor performance and burned clutches, and can cause foaming out of the filler dipstick and onto the engine. If after refilling transmission fluid, there are no problem codes, I would recommend having a Transmission Fluid Service completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs. If there are transmission codes, and/or the "Wrench" symbol is still illuminated, I would recommend taking your vehicle to a reputable transmission repair facility for a thorough diagnostic analysis. The "high fuel consumption" indicated in the instrument cluster is likely a secondary indicator of the transmission issue. Resolve the transmission performance problem first, then check fuel mileage.

Do I need to get the transfer case fluid and transmission fluid changed?
ANSWER : Hi, thanks for writing in. I looked at your maintenance schedule for your vehicle and found that for up to 150,000 miles, it only says to inspect the fluid level and not change it. The fluids are special fluids and if you did need any work done (i.e. if there is a leak present or other mechanical problem) then make sure the correct Ford certified fluid is used.

When it is time for you to have your transmission fluid serviced, consider having a certified automotive technician from YourMechanic come to your home or office to perform the service for you.

Hope this helps and best of luck!