Dura Lube Severe Instant Quiet engine treatment 8 oz top-off reduce heat and noise any engine

I've been a "back-yard" mechanic for 30 years, and I still own & drive my first new car, a 1984 Pontiac Fiero. As a routine part of my maintenance routine, I change my own oil and use a 50-50 mix of standard motor oil & synthetic oil, Lucas Oil Stabilizer, and typically Duralube or Slick 50 anti-friction additives. This has worked VERY well in the past, and the anti-friction additives DO quiet the engine (a direct sign of increased lubrication) when used. HOWEVER, Duralube's new Severe Instant Quiet is FAR BETTER than either regular Duralube or Slick 50, and can be used in ANY system (engines, transmissions). I've added it to manual transmissions, automatic transmissions, and engines. ALL operate much smoother and quieter. Noises I thought were worn transmission mounts go away (indicating it was really inside the transmission), and engines quiet down greatly. The 1984 pontiac fiero's engine cannot be heard, even with the sunroof open, at 45 mph in 4th gear. My Dodge Dakota's engine & transmission operate quieter and more smoothly, Same with my wife's Toyota Matrix. I would recommend this product to anyone.