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 👍

Im blown away I have a 2008 Toyota fj cruiser with 251k on it did oil change 10 days ago I also have a it's noisy. Rack in pinion put some prolube in the power steering pump noise is gone you have im very impressed my 1982 Toyota pickup has 516k on it pretty noisy motor put prolube in it sounds like a new truck runs amazing 👏