SOHC.co.uk Forums > CB350/400

oil

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steven400/4:
what type of oil should i be putting in my cb400/4???

hairygit:
According to the Honda manual, for U.K. use it should be "Premium quality 10W40"

ST1100:

--- Quote from: hairygit on November 28, 2011, 09:57:08 AM ---it should be "Premium quality 10W40"
--- End quote ---

And how does such translate into todays world?
Will a modern full synth* be OK, or might such harm bearing alloys, gaskets and seals?
What if one uses higher/wider specs like 5W50 or 0W60?

* besides the risk of dissolving existing coal buildups, thus leading to increased oil consumption on the first few thousand miles/kilometers

steven400/4:
the engine is like new inside it has had a complete rebuild full nut bolt everythink will that make a diff???
steve

hairygit:
Don't waste your hard earned cash on fully synthetic, there are no real advantages to it, and regardless of oil manufacturers claims, change it at least  every 2,000 miles, and I have seen threads in other areas of this forum suggesting NOT to use fully synthetic oils as they can be detrimental to the engine. It was designed to run on mineral oil, so that is the best to use. As regards different grades 5W50 or 0W60, unless your area has exceptionally cold weather for much of the year (-15c or lower) you are wasting your money, and 0W60 can allow clutch slip when hot!

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