poorhunter
Member
I have a "65 5000 SOS that will make a "low pitched whine"(?) when it gets up to operating temp and the RPMs are up for an extended time like cutting/baling hay. Doesn"t sound like anything is grinding or anything like that. Shifting gears doesn"t change the pitch or stop it. If I slow the engine the sound immediately goes away...increase the RPMs and after a few minutes, it comes back. There isn"t any loss of power or performance anywhere that is perceptible to me. Fluid levels are fine all around. Where do I start looking, or is this something peculiar with the SOS?