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FLSTC Heritage Classic
20W-50
Drain plug on the bottom
3.43 gallons.... or for you brits, thats 13 liters :)
The first FLSTC was introduced in the summer of 1985 as a 1986 model.
on my hd deluxe it is 7/8 max when hot. i think the manual says between 5/8 to 7/8 hot
Read the Service Manual....its not for beginners...you may want to consult someone whos done it before...some special tools are required to do it properly.
Softail Custom
The manual and technicians say that the gap should be from .36-.40. Personally I use .38 just to be in the middle and my 95' FLSTC has always run great from it.
http://www.drivegreen.com/Motorcycle_Tire_Pressure/HARLEY-DAVIDSON.shtml FXSTC is a Softail Custom with tire pressure 30 psi front tire and 40 psi rear tire. Heritage Softail is FLSTC WITH 36 psi front tire and 40 psi rear tire. Hope this is helpful.
8500 MILES
I put in a new battery which went dead after a few hours of riding. The bike started when jumped and ran OK except the speedometer didn't work and the lights were dim. If you jumped it from a car you likely destroyed your stator.