I Definitely could tell right away. How much smoother my vehicle is running. 2000 ford ranger 4.0 power steering pump is not humming/ whining anymore. I put Prolube in my 2014 chevy silverado. I also Prolube in my atvs & lawnmower & pressure sprayer.

I own heavy equipment. I have put this oil in my old 1998 Cat 953B because I could hear the hydraulic pump making noise under heavy load.Started to work and could tell the pump was much quieter. After about two hours I thought you know that was pretty nice, think I will put some in the hydrostatic transmission, it was noisy too. Right away when I went into pushing it was so much quieter and was pushing like it had just had stent placement. I’m a mechanic and operator and I’m not afraid to say Prolube is the real pudding. Get ya some you won’t be disappointed. Thank You Paul.

I changed oil in my twin cam Harley with 20w50 Lucas oil ( engine, transmission, and primary ) added Prolube to each. My experience is the engine is running smoother and quieter ( except my 2 into 1 exhaust ), the transmission is shifting smoother without the loud “clunk”, and the primary with the clutch plates feels very smooth. I am pleased with Prolube and will start using on my other vehicles - Thanks Prolube for a Good Product 👍