Thank you for posting. My 07 3:55LS seems to come and go with chatter. I think I will look further into this product.

 

I call it the way I see it - when the manufacturer says that I sure won't use it or recommend it in place of the manufacturer-specified additive. Sorry if that hurts your feelings.

Now, I'm gonna be truthful with you. Another member jumped in and posted that link, so I clicked it and read about it, then made my statement. I didn't even realize it was the SAME STUFF you have been talking about until just now.

 

Got to keep the record straight here. I don't believe that any product manufacturer is going to tell you to drain your rear diff and pitch the junk additive provided by FoMoCo. No company is going to open themselves up to that liability. I will tell you as I have stated throughout, this product has eliminated a gawd awful chatter in the rear end of my truck that has been persistent since I bought it new. Believe it, don't believe it, joke about it, or use your all encompassing automotive knowledge to attempt to debunk it. I really don't care. I do believe, however that without using it yourself, you should not presume to be an expert on whether it will work or not. Am I a salesman? Never. Have I purchased any other product this company manufactures? Not once. I will continue, to stand by my assertions that it worked in my truck after 132,000 miles of everyday driving. If I were in Mo. right now, I'd be glad to show you and let you drive the truck.