I can vouch for the "snake oil" that is AutoRX. I have an 89 s10 4x4 that has its fair share of sludge. I ran 3 treatments of it following the recommended instructions provided by a representative that I was emailing back and forth. Did absolutely NOTHING. Literally no difference at all. ...

Yes if yor engine had more sludge than you thought. just follow the instructions and you should be fine. Thats what Auto-RX will do dissolve sludge slowly just make sure the oil filter is ok. Daryl, I have a question about Sludge, I was reading something on a forum called BITOG and I ran accross a ...