I am an automotive technician and I always use Lucas Oil in my truck when I do an oil change. I had a minor leak on my left valve cover, with one bottle of Lucas oil, it stopped, and so did the leak at my oil sending unit. I know that they need to be changed, but right now i'm in a jam with moeny, and they will have to waite. I will always use Lucas Oil now. I have never had a problem with it, and I have never heard any bad things about it. Then again I do an oil change every 4000 km instead of the factory maintance schedual of 5000km. All Lucas oil does is coat the inside componants with a thin film that helps disapates heat and seals up spaces that may be casuing oil leaks or pressure leaks. I live by the stuff now. I will never switch off of it.
Lisa, As a last resort. I used Lucas transmission additive and it fixed a slight shifting problem. I am still driving that car with lucas in the tranny. The additive was a last resort, as I had a replacement. If I did use an oil additive, I would add it, run 1000 miles, do an oil change. Use factory recommended oil grade and see if that makes a difference
just use good oil with appropriate grade for engine mileage and temperature and do oil/filter changes regularly.
