I used to believe in engine treatments like Slick 50, STP and the like but none of them ever really did anything but empty my wallet and give me false peace of mind. This stuff seems to work, however. I put the recommended amount in my 95 Firebird Formula with 154K miles to slow down a front and rear seal leak ( LT1 V8's are famous for this issue) After about 1000 miles of being in the engine, the 4 inch long lines of oil that would show up on the ground after 2 days of sitting have all but stopped. I also put it in my 74 El Camino's 350 (repl engine) and it stopped most of the leaking from the rear seal. So it's not a magic bullet but it did more than anything else I tried. One other benefit is that because it circulates with your oil, it can potentially rejuvenate internal seals as well. Be a lot cheaper and easier than replacing valve seals if they're not too far gone. One last thing, I read how it sealed somebody's leaky floor jack hydraulic cylinder so I tried it on mine and it worked there as well. All in all I felt it was a good value for the price.

I absolutely LOVE Slim & Sassy! Over the course of 9 weeks in my best effort to eat healthier and exercise more often, I paired those two things with this oil and it has helped me reach my weight loss goal of 20 lbs!! 20 lbs in 9-10 weeks!! That's Crazy!