Daniel Johnston
Registered
Hello I'm on my second gsxr motorcycle now and I have ran both bikes on 10w/40 grade oil.. I live in the UK so in the winter it's normally an average of 6° degrees when I start my engine.. There is usually that mild tap which I can hear from the top end my 2005 gsxr 600 and my current gen 2 hayabusa do it.. Has anyone used 5w/40 fully synthetic to lubricate the engine better around cold startup?