Both of my vehicles have always leaked a little oil and had a wet place under them in the garage. Truck has always had QSGB 10w-40 and the Caddy has had either Mobil-1 or Maxlife 5w-30. Recently I swapped them both over to Castrol Syn-Blend I got at Autozone and I have been noticing that my garage floor is dry for the first time ever.. This make sense to anyone? Just surprised me a little. I may give the 'Magnatec' a shot when I run through this stash.