I haved used Amsoil products for over 20 years. I first started using it in my Suzuki PE250 Dirt Bike. The bike used to foul plugs like crazy. Somebody suggested using Amsoil two-stroke oil in it. I tried it and never fouled another plug. To this day I use it in chain saws, weedeaters, leafblowers etc. They all seem to start easier and run smoother. I used Amsoil in my 81 240D with 240K. It seemed to run smoother and quieter. I never had one problem with anything loosening up inside the engine. I also had a friend of mine had a Ford F-350 that wouldn't go into first gear when it was cold out. He changed the transmission fluid with Amsoil. Never had another problem getting into gear.

Andy