I learned of Lucas products from my cousin which had a 1990 f150 that had a 5 liter engine. And that engine had a rod bearing that was knocking badly and had very very low oil pressure. He did nothing to the truck but pour in the stabilizer and within id say 10 seconds the rod stopped making noise and the oil pressure returned to normal and he has been driving the truck everyday for many thousands of miles now with no noise and no problems. I now use lucas products in my own truck as well. thank you for making a product that works.