× 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: Ultra shift Transmission and M-Drive Oils
Posted to HD/Fleet Forum on 7/28/2025

[...trimmed text...]

First, the term "Synthetic" is a meaningless marketing term that should ignored in favor of legitimate specifications.

Second, unless you fully understand the SAE 300 and J306 standard, attempting ... Login to read more.