Ages ago I used some 'Spectro' Heavy Duty gear oil (SAE85W140) in my Evo FXR gearsack and all was happy.... Since changing the fluids all round I've switched to some lightweight crap (sold to me by some lame-brain salesman with no freakin' idea of anything that's not in a brochure) and apart from this oil escaping more easily from tired seals (she's a reliable old girl and a great ride, so's the bike actually) I find the gearbox is noisier. This light stuff might be ok for newer Twin Cams (and suits both primary and gearsack) but I'm not happy. I can't recall where I found the Spectro originally and a couple of calls have turned up nothing.
Anyone know who sells Spectro oils?
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