What oil do you put in a 1978 Honda Gold Wing?

Answer 1

Since this is an old bike the engine is likely to be worn. You can try single grade W 40 oil. If the engine is good and not so worn, use multi grade 10 W 40 oil, intended for motorcycles. Don´t use normal car engine oil. If the exhaust smoke is very black, then this indicates you should use a W 40 oil. However, if you are driving the bike in a cold climate, then use the 10 W 40 oil. Change oil every 2 or 3 thousand kilometers if the engine is very worn out.