12-21-2015, 06:30 AM
If you are using 10W30...then maybe the question is whether you want an ambient(cool) drain at ~10 weight... or a warm to hot(operating temp) at ~30 weight?... To me... flow rate would be of some consideration so as to flush out the "gunk" residing in the sump pan...I go with a "warm-hot" drain after a nice local ride... have lunch(whatever)...then drain & let drip for some time...I have gotten about an extra 8-10 oz of accumulated dripping by leaving off drain plug for a reasonable time(an hour or so) after the initial drain flow...I presume you are talking about your ST1300 here & so am I...