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  #1  
Old 05-26-2007, 02:36 PM
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Transmission conditioner

I have been told that ORileys sells a transmission conditioner that will help with shifting problems and will not swell up and damage the seals. Does any one know the name of this and has it helped with shifting? Comments and suggestions welcome. This is a 1984 300sd automatic that after the car gets hot it does not want to shift into the last gear. When it does this I have to put it in neautral and let the RPMs lower and it will shift into gear. Help Please
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Old 05-26-2007, 03:51 PM
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Quote:
Originally Posted by jack avant View Post
I have been told that ORileys sells a transmission conditioner that will help with shifting problems and will not swell up and damage the seals. Does any one know the name of this and has it helped with shifting? Comments and suggestions welcome. This is a 1984 300sd automatic that after the car gets hot it does not want to shift into the last gear. When it does this I have to put it in neautral and let the RPMs lower and it will shift into gear. Help Please
It sounds as if the 3 to 4 shift valve in the valve body is sticking. This is something that could be fixed by adding an additive, but I would use LUCAS Transmission fix available at most parts store. However, change your fluid and filter first if you haven't done so already! Although most additives say they can restore old worn out fluids, NOTHING can do this job EXCEPT fro a fluid change with filters,OK? I've found LUCAS GIRLING products to be some of the best.
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Old 05-26-2007, 03:56 PM
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I would definietly change the fluid (including torque converter) and filter first. I'm not a fan of additives at all so I suggest you might try Lubromoly synthetic ATF before trying an additive...
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Old 05-26-2007, 04:29 PM
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Originally Posted by thatguy View Post
I would definietly change the fluid (including torque converter) and filter first. I'm not a fan of additives at all so I suggest you might try Lubromoly synthetic ATF before trying an additive...
Lubrimoly synthetic ATf will definitely encourage hydraulic oil leaks in worn and old gaskets. Synthetics are definitely best in no problem conditions.
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Old 05-26-2007, 04:57 PM
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If you're going to try any conditioner........the one to choose is "Trans-X".

It's helped certain folks in the past with sticking valve bodies. It's not going to replace any bad clutch paks however.............
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Old 05-28-2007, 10:57 AM
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Working better

Thanks for the input. I added a bottle of conditioner and adjusted the Bowden cable and the transmission shifts the way it should. I will change the fluid and filter to ensure that it is clean.
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  #7  
Old 05-28-2007, 12:57 PM
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Originally Posted by Brian Carlton View Post
If you're going to try any conditioner........the one to choose is "Trans-X".

It's helped certain folks in the past with sticking valve bodies. It's not going to replace any bad clutch paks however.............
Trans-X would be a great conditioner to use if your going to change your fluid and filters later, but I would not leave it in the tranny for any long period of time as it tends to thin the fluid with solvents. This will help clear some of the gunk and varnish out of your valve body and drop it into the pan, but change your fluid after 100 miles. why Transmission fix by Lucas? Because it is a thicker version of your tranny fluid with superior shear strength capabilities and you can leave it in until your next fluid change.
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Old 05-28-2007, 12:57 PM
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