Six years ago I aquired an '88 Dodge Dakota. The motor had nearly 300K miles on it and was knocking on cylinder number four. After rolling in a new set of bearings, lightly sanding the rod and main caps and adding pieces of .002" and or .003" brass shim-stock under the bearing caps the bearing clearances were back within specs. After driving the truck for two weeks the oil pressure at highway speeds had again dropped below 20 psi. I was sure that motor would not last another month. Just for the sake of trying I changed the oil and adder a quart of Lucas Heavy Duty Oil Stabilizer. The benefits were immediately noticed. Cold idle oil pressure was over 85psi, hot idle pressure was over 45psi and pressure at highway speed was between 55psi and 65 psi. This truck is not driven a lot but over the last six years I have put another 40K miles on this motor changing the oil every 3K miles and adding a quart of Lucas at every oil change. The motor still has the same oil pressure as when I first started using Lucas. As the owner of an automotive repair shop I now purchase Lucas by the case in gallon jugs and recommend it to all of my customers as well as use it in every vehicle I own. I use it in my 2002 Harley Davidson, 1997 Dodge Caravan with 266K miles, 1980 Dodge Power Wagon, 1996 Ram 1500, 1998 Dodge Durango, 2001 Honda Recon and all my kids dirtbikes and go carts. Anyone who cares about their vehicles would be wise to use Lucas products.