Fix My Hog’s host, Bob LaRosa, provides us with some great information about Spectro Oil in this product review. Spectro has been formulating, packaging and marketing premium lubricants since it was founded by Robert H. Wehman in 1966. Learn more about Spectro Performance Oils.
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Ok, this makes sense on a modern motorcycle, what about a plus 50 year old panhead? Single or dual viscosity? Synthetic or Petroleum based?