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Oil preference is very much a subject for debate, but any 10W40 v-twin motorcycle oil will do fine. If using anything not spcific to motorcycles, make sure that it does NOT have the "energy saving" logo in the rating mark; this can cause clutch slippage. I have used Rotella diesel oil for most of my C50's 34K miles- Irecently switched from the synthetic 15W30 to the dino 10W40 because of concerns as to the weight in hot weather, so if you are in a cooler climate, the synthetic may just be the ticket for you. Volume is 3.6 quarts when changing with the filter.
Well ambient temp around you, is it high?
Check your cooling system as it may not have good enough circulation. Beside the little window there is a little line telling you if you are in low, good or high oil level.
1) Can not find this spec.
2) C50 rake is 33 degrees, Fat Boy's is 32.
3) Many have had over 50k miles without any major engine work. Luck and riding conditions determine this to a large degree, but I would say that most need to start thinking about valve/ring work at 60K.
4)Valve adjustment recommended at every 7500 miles; about a 4-hour backyard job, but doable without any real specialized tools. (I've been letting mine slide for 19k, just because it's been running so good!) Cam chain tensioner failures have been reported, but this seems to be the exception, and the use of synthetic oil may lessen the chances, Problems with water getting to the rear shaft splines have prompted owners to pull them and add Molybdenum paste at each rear tire change, and this requires replacing the oil seal- about $11.
5) Depends on current mileage and price, but with a modicum of proper care, you could expect 50k miles of riding without major issues.
dear bldrnr the proper oil weight for your bic depends on the climate where you ride 20/50 is recommended for hot climates 10/40 is recommended for average temps. jim
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