My pipes turned an obscene shade of blue after just a couple hundred miles. I already asked about it from the dealers and from several other friends. Seems there are many varying opinions. The dealer is going to take a look at it but I've put over 2,000 miles on it since I complained about it here (some 3 months ago).I use 20w-50 H-D synthetic, my sporty runs about 190. What are you callin unusally hot?