# True or False? An oil with the classification of 5W-30 has the viscosity of both a 5- and 30-weight oil. The 5W means the oil has a viscosity of 5 when warm and a 30 rating when it is cold.

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

#### Solutions

Chapter
Section
Chapter 8, Problem 20RQ
Textbook Problem

## True or False? An oil with the classification of 5W-30 has the viscosity of both a 5- and 30-weight oil. The 5W means the oil has a viscosity of 5 when warm and a 30 rating when it is cold.

Expert Solution
To determine

Whether the given statement is true or false.

### Explanation of Solution

Given information:

An oil with the classification of 5W-30 has the viscosity of both a 5-and 30 weight oil. The 5W means the oil has a viscosity of 5 when warm and a 30 rating when it is cold.

When the oil viscosity system was accepted by all industry, established by SAE. It become mandatory for all oils to be rated according to their weight. Multi-viscosity oil was introduced for some new engines, their rating can be done as 5W-30...

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