I have bought GS-150 and driven it 120 kms so far. I plan to change the oil at 300 kms. Through the forums, I came accross 3 choices:
1. Liquimollt 4T Racing 20W-50
2. Valvoline 4T 20W-50
3. ZIC 4T 20W-40, Black Bottle Mineral based.
GS owners Help me choose one, also share your experiences. some people complained about engine choking on 20W-50 liquimoly. i currently feel that engine becomes too havey on 3500-400 rpms.i expect the engine to go light ater first oil change though.