I am new on this site and a recent LT rider. I have a question concerning the oil type to use on this machine. What those having a long experience of this machine would advise as oil type (base type and specs) and brand. I am leaving in France where we have winter temperatures (14 to 41 F) and summer temperature ( 77 to 95 F). Is it better to use a different oil type for the 2 seasons or one of general purpose?