Recently I bought a 94 yamaha waveraider 701. Its now time to buy some oil for it and the guy I bought it from told me to only use yamalube. Its pretty expensive and I was wondering if pennzoil or any other cheaper type TCW-3 oil would be just as good. Its 12 years old and I doubt that there has only been yamalube used in it all these years but who knows. Please help me out.