| Silkolene Comp 4 for me if I'm paying and its for a twin, Pro 4 when i raced in-line 4s
Used Pro4 in R6 and ZXR400 at the TT in my CBR600s, CBR900 on the short circuits, Comp4 in my TL and in my 916, 996, 998 and 998R, also use it in my DD bikes and my road going S2R 800 and M1100
Preferred grade is 15W50 for the Ducatis and 10W40 for the Jap bikes
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