older motor oil change

I've had very good luck by adding Lucas oil treatment to old engines. When I got my old Ramcharger it smoked and had a little knock in it. I simply replaced 1 quart of oil with a quart of Lucas during an oil change and it ran for a year up until I pulled the motor and replaced it with a turbo'd magnum. It still smoked a little on start-up, but the knock all but went away. Oil pressure improved as well. My dad, who turned me onto the stuff, swears by it.

BTW, if you do decided to use it. Mix it with one quart of oil before you poor it in the engine. This will thin it down enough to poor easily.