Wrong Fluid in Trans

[pokeyl]

I just started my last fluid changes for the car. As I opened up the trans drain I found 80-90 or 70-140 can't tell for sure. It sure is not RED ATF grade fluid. This explains the stick shifter when cold. I will put the correct DEX3 in and run it next week, drain and refill.

[99RT10]

Maybe they put in Castrol Syntorq?

[Steve M]

You can run a wide variety of weights in the T-56 and TR-6060. The thicker the fluid, the worse the cold shifting will be.

[Steve-Indy]

If you are referring to the 2004 Viper that I found in one of your older threads, the factory fill was Mopar Synthetic Manual Transmission Lubricant 75W-85...a clear fluid which is rebranded Castrol Syntorq. Yes, it is thick...noting that it was initially used under a Viper TSB in 1998 to suppress NGR. It became the Viper factory fill in 1999 through 2006 Vipers.

[pokeyl]

If you are referring to the 2004 Viper that I found in one of your older threads, the factory fill was Mopar Synthetic Manual Transmission Lubricant 75W-85...a clear fluid which is rebranded Castrol Syntorq. Yes, it is thick...noting that it was initially used under a Viper TSB in 1998 to suppress NGR. It became the Viper factory fill in 1999 through 2006 Vipers.

Yes, I just hope it shifts better cold with Dex3

[99RT10]

Yes, I just hope it shifts better cold with Dex3

I thought that Synth Dex 4 was the best for Mopar products?

[Steve M]

I thought that Synth Dex 4 was the best for Mopar products?

TR-6060 calls for ATF+4 as the factory fill. Dexron III was common for the T-56, and is what the T-56 in my old Camaro called for. As Steve-Indy pointed out, Castrol Syntorq was also spec'd for the T-56 to help reduce some of the neutral gear rattle.

John Donato has also recommended a thicker fluid for some TR-6060 builds, as you can see here:

The production fluid is the ATF+4. This works very well in the TR 6060 for most applications. After going through several 6060's that were installed into boosted Vipers running the 1/2 and mile events with severe head set gear wear the switch to the BG fluid eliminated the issue.
John

The fluid he's specifically referring to is BG Synchro Shift II - I've run it in my TR-6060, and have also noted some cold shifting notchiness that goes away once fully warmed up. It is a synthetic 75w80 fluid.

[99RT10]

TR-6060 calls for ATF+4 as the factory fill. Dexron III was common for the T-56, and is what the T-56 in my old Camaro called for. As Steve-Indy pointed out, Castrol Syntorq was also spec'd for the T-56 to help reduce some of the neutral gear rattle.

John Donato has also recommended a thicker fluid for some TR-6060 builds, as you can see here:



The fluid he's specifically referring to is BG Synchro Shift II - I've run it in my TR-6060, and have also noted some cold shifting notchiness that goes away once fully warmed up. It is a synthetic 75w80 fluid.

Where can you get the BG fluid and how much/

[Steve M]

You can buy it directly from John, or can do a quick Google search and see what else comes up. It is about ~$22/quart, so not cheap.

[pokeyl]

OK after a week the trans is better in 1-6 but sometimes is harder to shift into reverse, only when hot, works perfect when cold. 50/50 when hot. The shifter is very hart to push sideways, after you get it pushed over the up move is just fine. I may have to switch to another fluid.

[Steve M]

OK after a week the trans is better in 1-6 but sometimes is harder to shift into reverse, only when hot, works perfect when cold. 50/50 when hot. The shifter is very hart to push sideways, after you get it pushed over the up move is just fine. I may have to switch to another fluid.

Honestly, what you describe sounds like a mechanical problem that's either internal to the transmission or somehow related to the reverse lockout solenoid. I'd be very surprised if a different fluid solved your problem.

[pokeyl]

It was fine before I changed fluid, I just found a video with rev lockout fix.

[Steve M]

It was fine before I changed fluid, I just found a video with rev lockout fix.

Weird...just out of curiosity, what rev lockout fix are you talking about? You didn't dislodge a connector while changing the fluid or anything did you?

[pokeyl]

Weird...just out of curiosity, what rev lockout fix are you talking about? You didn't dislodge a connector while changing the fluid or anything did you?

I will check the connector as the fill is on that side.
https://www.youtube.com/watch?v=9xi_PUq19nM

[pokeyl]

Just rebuilt the rev lock-out with a custom spring and no computer control, feels like any other trans now. and extra spring detent to get to reverse. No ECM control over the function at all!

[Steve M]

As in, if you try to quickly shift from 4th to 5th, you could accidentally put it in reverse?

[pokeyl]

As in, if you try to quickly shift from 4th to 5th, you could accidentally put it in reverse?

No, the extra spring force stops you from entering reverse, the force is double why you need to hit 5th! Also reverse is and un-syncroized gear, you can't enter it until you are stopped! I have no idea why there is a lock-out, required by Law?

[Steve M]

Pretty sure reverse is synchronized in both the T-56 and TR-6060.

[pokeyl]

Pretty sure reverse is synchronized in both the T-56 and TR-6060.

You are correct.

[pokeyl]

New lock out is on order, you can drive the car but you can slip into Reveres when moving forward. I tested it under controlled conditions. The car is OK for me to drive but not for other family members.

I do not recommend the repair you see online unless you need it to get your car running before you can get the new parts.

[Steve M]

Good that you tested it...I figured that's what would happen as soon as I watched that video. Definitely let us know if the new lockout solenoid fixes the issue.

[DonatoEng]

Defeating the reverse lock out is a very bad thing.
Under special conditions I have been able to go from 4th to reverse at 45mph in a Viper with a T56.

[A2008]

I am wondering if you just cut the spring to ease the tension, if that would take care of your problem instead of ordering a new lockout??

[pokeyl]

$70 for a new AC Delco (same as Mopar) part is cheap. Easy to change too.

[pokeyl]

New part installed all check good!