What kind of oil should be used for Honda CB400?

1 Answers
McChristopher
07/29/25 3:23pm
According to the CB400 manual, only SF grade or higher mineral oil is required. The choice between 5W, 10W, or 15W depends on the local environmental temperature. Mineral oil: Mineral oil is a lubricant refined from petroleum. The base oil of mineral oil is a byproduct obtained after the distillation of useful light substances (such as aviation fuel, gasoline, etc.) from crude oil during the refining process. Advantages of mineral oil: Among the oils available on the market, mineral oil is generally 30% cheaper than semi-synthetic oil and 40% cheaper than fully synthetic oil. If it does not significantly affect driving experience, power output, or engine maintenance, choosing the more affordable mineral oil is a wise decision.
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