Review on 16.9 Oz Rislone Nano Prime Synthetic Engine Oil Additive by Shawn Schmidt

Used this today during an oil change. My engine has high mileage so I threw this in along with Quaker State high mileage oil. Within the first 30 miles I noticed that I can barely here the engine running at a red light. This stuff really works fantastic. Also a very smooth acceleration. Can’t wait to see if any more improvements occur while this is in the engine. One bit of advice, shake the bottle VERY WELL.