× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: What does the 'W' mean?
Posted to Technical Discussion Forum on 2/10/2006 1 Reply

Yes that is what happens It is called Viscosity Index(VI) Improver it is an additive that is blended into the oil Login to read more.

1 Replies Received (View Replies)