When oils ain't oils...
Be careful of the oil you chose. The weight spec of oils is fairly broad. Go to
Motul Viscosity Chart They have a good indication of the viscosity of fork oils at the bottom of the chart.
The Kayaba G10 oil as specified in the Triumph manual has a Viscosity of 37.5 @40C. Motul 10W is 35.9 so just changing brands has you 4% softer.
I installed progressive front springs and decided to go 20% higher than stock fork oil (Viscosity of 45) so thats a 50/50 blend of Motul 10w and 15w.
I'm 200 lbs and that worked for me.
