Motor Oil: 10W30 Vs. 5W30

Written by kelley boles
  • Share
  • Tweet
  • Share
  • Pin
  • Email
Motor Oil: 10W30 Vs. 5W30
Sticking with your vehicle's oil recommendation is never a bad idea. (motor image by Petr Efremov from Fotolia.com)

When it comes to engine oils, you have a variety from which to choose. Which one of these varieties you choose to use is dependent on several factors such as driving conditions, external environment, the total number of miles on the engine and the recommendation of the manufacturer. Two popular types of engine oil are 5W-30 and 10W-30. Each of these oils has its own strengths and weaknesses.

Other People Are Reading

The Basic Function of Engine Oil

Without getting into the technical details, you need to know that at its most basic level engine oil is a lubricant. Its job is to make sure that the moving parts of your engine don't rub together. If this were to happen, your car's engine would stop working and your mechanic would either rebuild or replace your engine, depending on the damage done.

Explaning the Numbers

Two sets of numbers designate all motor oils sold today. The numbers are displayed as (Number) W (Number.)The first number is the oil's cold viscosity rating and the second number is the oil's hot viscosity rating. The "W" stands for winter and is the cold viscosity rating. This number tells you how easy the engine will start in cold weather. The lower this number, the easier the engine starts in cold weather.

5W-30 Pros and Cons

The pros of 5W-30: It is best for operating in cold climates, and it tends to give slightly better engine protection. The cons of 5W-30: It might not be suitable for vehicles that operate in hot climates, and it is not the best option for vehicles that are involved in frequent city driving (stop and go) or vehicles that frequently haul heavy loads.

10W-30 Pros and Cons

The pros of 10W-30: It is a better choice for vehicles that operate in hot climates; it is a better choice for stop-and-go driving; and it is a better choice for vehicles that frequently haul heavy loads. However, it is not as good as 5W-30 when used in extremely cold climates.

Expert Insight

Tom and Ray Magliozzi of NPR's Car talk recommend that while it might not make a huge difference which oil you choose to put in your vehicle, it is never a bad idea to stick with your vehicle manufacturer's recommendations.

Don't Miss

Resources

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.