Forum Discussion

crcr's avatar
crcr
Explorer
Jun 17, 2014

Transmission additive good for 2004.5 Dodge Ram Auto Trans?

A few months ago, I bought a 2004.5 Dodge Ram, 5.9L Cummins diesel, one owner, which now has 140K on the clock. I have some of the maintenance records, but not all. As best I can tell, I don't believe the automatic transmission has ever been rebuilt. Anyone who knows these trucks knows that the auto transmission in these trucks needs to be treated carefully to make it last a long time. I would like to stretch the life of the trans as long as I can. The truck came with a Bully Dog Tuner, but I never put the tuner on the higher levels -- just the lowest or the next setting up, "Tow". I never run the truck hard, but I do tow a 7500 lb travel trailer, sometimes in extreme Southern AZ summer temps. And the previous owner towed a fifth wheel RV with the truck.

I have been using Lucas Fuel Treatment in the truck plus our car, and think it may be helping fuel mileage. These Lucas products all seem to have a top notch reputation. So I am considering adding one of two products: either the Lucas 10009 Transmission Fix, or Lucas Automatic Transmission Conditioner to the auto trans. I had the trans fluid and filter changed when I bought the truck a few months ago, so I would have to drop a little bit of auto trans fluid to add the Lucas product.

My question is, do you all think adding either of these products as a precaution for my transmission is a good idea? If so, which of the two products would anyone recommend? Or a recommendation for a different transmission additive product? The Lucas transmission additive only costs $12 so if there is even a chance that it might extend the life of my transmission, it's a small price to pay.
  • crcr wrote:
    A few months ago, I bought a 2004.5 Dodge Ram, 5.9L Cummins diesel, one owner, which now has 140K on the clock. I have some of the maintenance records, but not all. As best I can tell, I don't believe the automatic transmission has ever been rebuilt. Anyone who knows these trucks knows that the auto transmission in these trucks needs to be treated carefully to make it last a long time. I would like to stretch the life of the trans as long as I can. The truck came with a Bully Dog Tuner, but I never put the tuner on the higher levels -- just the lowest or the next setting up, "Tow". I never run the truck hard, but I do tow a 7500 lb travel trailer, sometimes in extreme Southern AZ summer temps. And the previous owner towed a fifth wheel RV with the truck.

    I have been using Lucas Fuel Treatment in the truck plus our car, and think it may be helping fuel mileage. These Lucas products all seem to have a top notch reputation. So I am considering adding one of two products: either the Lucas 10009 Transmission Fix, or Lucas Automatic Transmission Conditioner to the auto trans. I had the trans fluid and filter changed when I bought the truck a few months ago, so I would have to drop a little bit of auto trans fluid to add the Lucas product.

    My question is, do you all think adding either of these products as a precaution for my transmission is a good idea? If so, which of the two products would anyone recommend? Or a recommendation for a different transmission additive product? The Lucas transmission additive only costs $12 so if there is even a chance that it might extend the life of my transmission, it's a small price to pay.


    I would stay away from any transmission oil additive. Use the correct rated fluids and filters and keep on truckin.

    Also the bands on these tranny's need adjusting as well to promote longevity.