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4 spd fluid

Started by poppa, May 13, 2016, 05:45:34 PM

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poppa

May 13, 2016, 05:45:34 PM
What's everyone using? My trans doesn't want to downshift when cold , think it's the oil. Fine when warmed up.
God must love stupid people....he made a sh**load of 'em....

Matco tools...guaranteed for a lifetime. Just not a human lifetime.

Charger-Bodie

#1
May 13, 2016, 06:24:15 PM
Brad penn gl4
68 Charger R/t white with black v/t and red tailstripe. 440 4 speed ,black interior
68 383 auto with a/c and power windows. Now 440 4 speed jj1 gold black interior .
My Charger is a hybrid car, it burns gas and rubber............

68CoronetRT

#2
May 14, 2016, 09:43:40 AM
I tried the Redline GL4 synthetic 80-90 and will be changing it soon. It did help with the shifting when the fluid was new and fresh but it began leaking all over the place.

Aussiemadonmopars

#3
May 14, 2016, 09:49:13 AM
I used to use auto trans fluid in my GM transmission. I don't know that it would suit the Mopar four speed though.  :scratchchin:

PlainfieldCharger

#4
May 15, 2016, 08:12:09 AM
Quote from: 68CoronetRT on May 14, 2016, 09:43:40 AM
I tried the Redline GL4 synthetic 80-90 and will be changing it soon. It did help with the shifting when the fluid was new and fresh but it began leaking all over the place.
Went with the Redline and pulled it in 2 weeks,leaked where it had not leaked before. Switched to Brad Penn GL4. Much better now :icon_smile_cool:

igozumn

#5
May 15, 2016, 09:14:20 AM
Good ol' 80w90 here.
A man walks into a psychiatrist's office wearing nothing but underpants made from saran wrap.  The psychiatrist says, "Well....I can clearly see your nuts...."

Charger-Bodie

#6
May 15, 2016, 09:36:37 AM
The key is for it to have the gl4 rating. Not compatible with , but actual gl4 rating. Buddy of mine is a whiz with these transmissions, that's where I got this info and real experience from that says he is 100 %!correct
68 Charger R/t white with black v/t and red tailstripe. 440 4 speed ,black interior
68 383 auto with a/c and power windows. Now 440 4 speed jj1 gold black interior .
My Charger is a hybrid car, it burns gas and rubber............

birdsandbees

#7
May 15, 2016, 09:43:39 AM
Quote from: igozumn on May 15, 2016, 09:14:20 AM
Good ol' 80w90 here.

Has worked in mine since 1969..  :yesnod:
1970 'Bird RM23UOA170163
1969 'Bee WM21H9A230241
1969 Dart Swinger LM23P9B190885
1967 Plymouth Barracuda Formula S
1966 Plymouth Satellite HP2 - 9941 original miles
1964 Dodge 440 62422504487

toocheaptosmoke

#8
May 16, 2016, 11:36:45 AM
Quote from: Charger-Bodie on May 15, 2016, 09:36:37 AM
The key is for it to have the gl4 rating. Not compatible with , but actual gl4 rating. Buddy of mine is a whiz with these transmissions, that's where I got this info and real experience from that says he is 100 %!correct

x2, many of the GL-5 oils have anti-friction additives that are harmful to the bronze/brass parts in a transmission.   
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