Aye, I'll be going this weekend to have a look at a few second hand NSR150s and would like some tips as to what to look out for when I am looking at these bikes. I went to a dealer in vic park today and started one and just love the sound and smell . The bikes dimensions are perfet for me. As you might know I'll be using it to ride to uni and there is at least one other NSR150 rider there. Relatively short trip to uni, around 20km one way. It is sort of hard to toss up between a 90-96 Across for 3000-4000 dollars compared to a 2001/2002 NSR for the same price and around 5000km. Either way they both will need SOME fixing. Having said that I am pretty sure I'm gonna go with the ring-dinger. Not planning on doing any extended rides, and yes I have read about the 'do not ride the bike at or over 100km/h for extended periods' One of the things I will be definately looking out for is an engine rebuild with proof if the bike has over 15,000km on it. Is there any way to tell the condition of the engine just purely by the sound? What should a NSR150 in good working order be idling at, even though 2 strokes hate to idle? What sort of mileage can I expect, according to some websites they say 17-19km per litre? Any comments? What oil and fuel should they be using, I want the previous owner to have cared for the bike and not just filled up with junk. By the way, can anyone give me prices on how much these two stroke oils cost? According to a few of my mates it is a few cents per litre overall. If you can give me any other tips that would be useful when looking over the bike/riding the bike that would be appreciated. Cheers.