I suspect this is a naive question, but the owner's manual on my new 02 King says use ONLY HD brand oil. To emphasize this it then suggests using Diesel oil if in a pinch, implying normal automotive oils are out of the question. Is this bullshit or should I use only the HD brand (bike is about a quart low with 850 miles and am planning a 500 mile trip this weekend (b4 the"1000" mile service, which dealer said was OK). I have several other bikes and haven't seen this issue b4.
thx, greg
thx, greg