× 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: 5-30/10-30 whats the diff?
Posted to Open Discussion Forum on 3/1/2000 4 Replies

[...trimmed text...]

Perfect. That's what I'd thought. It seems a lot of folks are laboring under the delusion that the oil actually BECOMES 30 or 40 weight, when in reality it maintains its 5W or 10W viscosity and just p... Login to read more.

4 Replies Received (View Replies)