I use Mobil 1 15-40 wt synthetic in my 1995 Yamaha TW200. It has over 6,500 miles with no problems.
What oil weight does a 2001 yamaha raptor 660r use
the manufacture specified oil weight is 20/40. i use only Yamaha oil as it is designed for Yamaha products.
2-Cycle Engine oil.
I use 10w 40 Yamaha oil
20/50
250
10w40
yamalube 10w30
10w 30 Average climates. 10w 40 in warmer climates. Unless I'm mistaken warm weather heavy weight, cool temps call for lighter weight oil. Feel free to correct me.
Premix (mix oil and petrol at a certain ratio) Contact you local Yamaha dealer for the best mix.
10-40 synthetic Suzuki oil