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Hello,

I have always used Nulon valve saver ( 1 ml / litre of petrol in my CB175) as the valves are not hardened.However, an experienced motorcycle mechanic friend of mine tells me it's not necessary especially as I only do a low mileage.

I would be interested in members thoughts on this, and also could its use be detrimental to the carbs and cause a rich mixture?


Cheers, Graham
 

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I have never used this product but have used other lead substitute before. In theory they SHOULD help but I have not noticed any issues or benefits otherwise.
It could be as your friend stated that the engine doesn't have high mileage to notice the difference.
 
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