5-50.

Since the M50 was rebuilt, I've put >2000km on it, varying engine speed and load (driving it pretty hard on occasion ). As I'm about to put @ 5000 highway km on it, I figured it was time to step up and purchase my first barrel of synthetic.

Any gripes about the grade? Vehicle only gets driven from April to November.

I'm looking forward to spending a few quality hours behind the wheel and seeing the mountains again. Oh, and spending some time with my wife too.

Dave M