quote:
Originally posted by Dr. T:
georgeyew just hit the nail on the head!
The viscosity requirement is TEMP. based...whether you use a 0-20 or a 15-50 DOESN'T matter with respect to engine clearances, emissions or any other fabricated entity. It is a temperature-based requirement depending on prevailing ambient conditions. It's just been dummied down for N.A. customer...
