Yamaha Yamalube 10W-40 Full Synthetic HP Engine Oil- 1 Quart, #LUB-10W40-FS-12

pretty good quality. I been using it ever since i got Yamaha and got no problem since.

Was the best price I could find for ghosts product. Arrived in good condition

Always used Used on Kayo 110EFI Kayo storm 70 quad TTR230 TTR110 Best oil around.

Bike runs great with this. Would recommend.

Fast shipping. Professional packaging. Yamalube is recommended for the Yamaha 400 Big Bear because it's engineered by Yamaha's engineers to perfectly meet the specific needs of their engines, acting as more than just a lubricant by also serving as a coolant, cleaning agent, rust protector, and more. Using Yamalube ensures the engine receives the intended performance and longevity designed by the manufacturer, optimal lube for shifting the 5-speed constant mesh system, including the reverse gear shift, and cleanliness for all engine components requiring high quality lube.

Fast shipping, oil was sealed vey well and did not leak.

Cant get any better gives the exact amount needed

I had tried a different major oil brand for motorcycles. I had clutch slippage, noisy motor and didn't seem to rev. as freely as before. I switched to Yamalube soon after. I must say the change was immediate, no clutch issues, quieter motor. I have been riding cycles for 30 years and am very impressed with the Yamalube.