Forum › Category: Bajaj › engin-oil-grade 0 Vote Up Vote Down Akash Das asked 5 months ago Which engin oil is good for discover 110 cc bike….? 1 Answers 0 Vote Up Vote Down Deshi Biker Staff answered 3 months ago 20W50 is recommended engine oil for Bajaj Discover. You can try Shell Advance AX5 20W50 mineral. If you want to use full synthetic, then you can go for liqui moly.