Yamalube All Purpose 4 Four Stroke Oil 10w-40 1 Gallon by YamaLube All Purpose

This is Yamaha OEM oil. I have been using it in my Yamaha ATVs for years. Have never had any oil related engine issues. I will continue to use this oil in the future.

regular purchaser of this oil. have used it with good results in dirt bikes and atv's. works with wet clutches and sometimes is a good price.

I have a 2007 Yamaha V Star Silverado 1100. I bought it used with 17k miles on the odometer and it ran fine. Not knowing what the maintenance was like from the previous owner I decided to do a full tune up including oil and filter change, final drive oil change, new air filter and spark plugs, valve adjustment and carburetor sync; it made a huge difference in the way the bike felt, sounded and not to mention the ride. For that first oil change I used the Motul 10W-40. With time my clutch started slipping no matter how well I adjusted it (top and bottom adjustments). I don't ride the clutch or do any weird driving to have the clutch slip with such low mileage. Asking around a friend told me that some older Japanese bikes won't take well synthetic oil and to look into changing the oil with original Yamalube to see if that would fix the issue. To make a long story short I ordered this Yamalube and a new filter and once I received both went on to changing the oil. Incredibly enough not only did the clutch slip stop but from the first start the engine sounded different; way quieter (engine internals very smooth), exhaust sounds deeper now, it has more power and you can rev the engine up in normal driving with noticeable less vibration. I am very happy with this product, this will be the only engine oil I will use from now on in my motorcycle. I've put on at least 3k miles since the oil change and haven't noticed any down grade in performance or sound. Great product, highly recommended.

I’ve been using Yamalube in my 2015 FJR1300 since new. Never encountered any engine or transmission problems. Good product!

Fantastic