what 420a manual transmission fluid can i use?

[96 420a-t]

I never ran anything but the chrysler approved fluid. It's the one that says nvt-350 on the body. I personally would never run anything else. The slightly higher cost is worth the piece of mind. IMHO

I bought some 6 months ago and it was 26 a quart.

 

[necrotopsy]

1st and 2nd are brass syncro's, the rest are paper lined.

i use mopar manule transaxel fluid.
never had a grind ever. in this car with 170k miles
or in my old 400+ hp one

 

[VelocitàPaola]

I never ran anything but the chrysler approved fluid. It's the one that says nvt-350 on the body. I personally would never run anything else. The slightly higher cost is worth the piece of mind. IMHO

I bought some 6 months ago and it was 26 a quart.

Indeed, but the stuff was becoming hard to come by. Chrysler recommended ATF+4 as an alternative, and if you can't trust them, who can you trust?

Anyway, Modern Performance recently started carrying the original Mopar fluid. It's $44 for 3 quarts -- not too bad:

Mopar T350 Manual Transaxle Fluid - 00-05 Dodge Neon Drivetrain Parts, Clutches, Axles, Short Throw Shifters, Booger

 

[VelocitàPaola]

I'm not sure if you can find the original stuff anymore. Modern sells the Mopar ATF+4 now. Their product page notes this:

if you drive your car hard, a Chrysler Engineer that we work with has recommended the use of Mobil 1 High Mileage Full Synthetic 5W-30 or 10W-30.

https://www.modernperformance.com/p...neon-srt-4/95-99-neon-drivetrain-transmission

 

[BLACK'98DSM]

Synchromesh, ATF +4, and engine oil all seem to shift the same. So it's all about what you prefer or what you can get your hands on.

 

[XspychoXkidX]

I wanted to add here that on my manual transmission, there is a label that says to use ATF+4. I removed the fluid and that is exactly what came out. my transmission is also the NVT-350.

 

[BLACK'98DSM]

I wanted to add here that on my manual transmission, there is a label that says to use ATF+4. I removed the fluid and that is exactly what came out. my transmission is also the NVT-350.

Interesting. I've never seen that before. Maybe somebody added it at some point.

 

[XspychoXkidX]

Interesting. I've never seen that before. Maybe somebody added it at some point.

Sorry I remembered I swapped out the 2g eclipse trans for a neon trans from an 2000s model. Makes sense why there was a label since the trans was newer. Well to reconfirm this one had a label for atf+4.

I talked with my roommate, that has a neon he says he's been using synchromesh in his neon. His is a 95-99. He drives it pretty hard. Ill need to ask him how long he's been using it, but he's saying the atf+4 and synchro mesh have a lot of the same ingredients that are required for our transmissions and thats why he uses it.

 

[BLACK'98DSM]

I've ran all the possible fluids in my trans. They all shift about the same. 5w-30 is a little noisier but it got better when I went to 10w-30.

Off the shelf ATF+4 is the cheapest option to run. Although Mopar ATF+4 is pricey.

 

[barza21]

Amsoil synchromesh is what I used for years. Used it while I autocrosed back in the day, went on countless road trips, and daily driving (I still use it and never had a problem at -40* F up here on startup and daily driving); never had any complains with gear shifting or noise. It was cheaper than the mopar transmission fluid that dodge was selling at the time. For whatever reason I think I remember reading articles about atf and our synchros not being compatible or something. I could be completely wrong, but the thought comes to mind.