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Changed the oil two months ago and used synthetic royal purple 10w-40. Also changed spark plug back then - guy at Napa told me it was NGK DCPR8E
I thought it was the oil so I changed back today to Castrol GTX conventional 10w-40. Only had about 70 miles with the synthetic - what a waste!
Anyway the bike did not perform any better so I thought maybe the spark plug. Looked up the spark plug and found the internet says it's NGK DR8EA, not what I have in there. Took the old one out and it's black - covered in soot. Not wet which is what I thought I might find. Took her for a quick spin after changing the plug. I think I notice a slight uptick but it got dark so I'll have to wait until tmrw
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