Do heavy-duty engine oils have different viscosity grades? What are gear oils used for?

Sep 7, 2012 ... You see those cryptic combinations of letters and numbers on motor oil bottles everywhere. What do they mean? To decipher them, you have to ... Common Acura Service Codes: What Do These Combinations Mean? Code Name, Code Meaning. A12. Replace engine oil; Rotate tires; Replace air cleaner element ... Jun 14, 2007 ... Neither number corresponds to an actual 'weight,' even though that is the term most people use when referring to motor oil. The viscosity (flow ... The higher numbers of a gear oil (e.g., 75W-140) does not mean that it has higher viscosity than an engine oil 20W-50. Contents. 1 Grades. 1.1 Multi-grade ... Feb 17, 2022 ... This blog post by Mike Patton Ford Lincoln will explain what the various oil grade numbers represent and how to choose the best one for your car. ... meaning of the preceding letters. For ... You'll notice that some components such as check valves, ball valves and isolation valves do not use tag numbers. I mean, I knew it meant to be carefull for the direction you install the oil filter cartridge... but I had no idea what PA or AL meant? I had asked a few car ( ... Nov 22, 2024 ... Companies that operate commercial vehicles transporting passengers or hauling cargo in interstate commerce must be registered with the FMCSA and must have a ... What do the numbers mean on motor oil? · What is Multi-weight (or Multi-Grade) motor oil and what is the meaning of Viscosity Grade? · What is a 0W motor oil and ... What does the 10W30 designation on engine oil mean, and how does it affect equipment? We answer these questions and more in this article.