Registered Forum User
Mille
Bikes: ST4S
Posts: 364
Join Date: Dec 2002
Location: Hertfordshire.
Mood: Finally gotten over the 748R getting stolen thing. Actually, no i haven't !
An oils high temp rating (40,50 or 60 ) does not determine its ability to endure stress at critical points like the valve gear.
The designers of engines take into consideration the intended oil and the tolerances they require. using a thicker oil is not a good idea.