you could try one or two bottles then drive around for at least five to ten hours if it stops the leak then your good. If it's helping but you still have a leak then add a third? According to the manufacturer it's one bottle per six liters or quarts of oil You might want to consider Maxlife as well....
Has anyone had success with this product? My buddy is looking to toss something into an old Chevy Van to get it through the winter, it has a RMS leak. I had suggested LM Motor Oil Saver and a HM oil. He asked me about this product and it peaked my interest since he heard good things about it. So I thought I'd ask here. Thanks