Has anyone used Castrol Tection? I have used Castrol in my cars and motorcycles for years and when I got into my Honda 500 cc for an alternator/generator replacement at 80,000 miles the aluminum innards were as clean and shiny as the outsides, and the cars have never needed any teardown. My '82 diesel Rabbit got run into at 270,000 miles and always had Castrol GTX. That's my testimonial for Castrol, and would like to use their diesel product if someone else has tried it and likes it.