Back in the day we used the supplied fabric covers for factory oil coolers for cold /cool days ( but that was straight weight oil )
Current other bike ( 15w-50) has a manual valve to take the aftermarket cooler out of the loop.
Does the whopping M-G rad require shuttering between 45-60 F ?
Mind you, I`m not in the habit of caning any engine ( esp. air cooled) until fully warmed up.
Just "wool gathering"
Thank you
As long as I`m chattering; Are any of these fly screens ( Dart etc.) of any value or they largely cosmetic ?
Yes I am 100% new to M-G