AMSOIL 0W-30, 5W-30 and 10W-30 synthetic motor oils are ALL 30 weight oils. The answer is that ANY one can be used regardless of the vehicle owners manual recommendation. To better understand, in a 5W-30 oil, the “W” stands for winter performance. In winter weather the 0W oil will flow like a 0W oil, and the 5W will flow like a 5W oil and a 10W will flow like a 10W oil just until the engine warms up. This multi-grade performance allows faster oil flow during cold start, however when the oil warms up, they all reach the designated 30 weight viscosity.

In order to understand the differences one has to first understand that the numerical values given to these various weight oils are strictly empirical numbers. For example, 0W does not mean that the oil has no weight. That is one of the reasons why we say it is strictly an empirical number.

In order to determine the differences between the three oils one has to look at the kinematic viscosity of each lubricant. The kinematic viscosity is essentially the amount of time, in centistokes, that it takes for a specified volume of lubricant to flow through a fixed diameter orifice at a given temperature.

Let’s compare the kinematic viscosity of the three AMSOIL lubricants

AMSOIL 0W30 is 57.3 cST @ 40 °C, & 11.3 cST @ 100 °C

AMSOIL 5W30 is 59.5 cST @ 40 °C, & 11.7 cST @ 100 °C

AMSOIL 10W30 is 66.1 cST @ 40 °C, & 11.7 cST @ 100 °C

As you can see from the data above the kinematic viscosities are extremely close. Therefore, whether you use the 0W-30, 5W-30 or the 10W-30 is strictly a matter of choice. With the small differences in kinematic viscosity you would be hard-pressed to detect these differences on initial engine start-up without specialized engine test equipment.

All three oils are excellent motor oils and ANY one can be used in a vehicle which requires either a 0W-30, 5W-30 or 10W-30 oil as well as in several other engine applications including an engine which recommends a 5W- 20 oil.

How to save money on fuel… with AMSOIL.

It does little good worrying about whether fuel prices will go up or down. Very few people have control over the price of fuel at the pump. What you should focus on, then, are things you can control.

Foremost among these are the lubricants you use in your engine and drivetrain. Synthetic motor oils, transmission fluids and gear oils have a proven reputation of increasing fuel efficiency. AMSOIL has been the leader in synthetic lubrication for automotive service since 1972, hence its name “The First In Synthetics.” Compared to conventional petroleum based lubricants, AMSOIL Synthetic Motor Oils yield significant increases in fuel economy.

Not everyone is able to downsize their vehicle every time gas prices go up, but whether you downsize or not, you’ll want to switch to AMSOIL synthetic lubricants for more efficient, cleaner engine operation.

Example:

Conventional motor oil companies recommend 3,000-mile drain intervals
Conventional 10W-30 Motor Oil
*(40 quarts needed for 25,000 miles) @ $2.50/qt. x 40 = $100.00
8 Standard Oil Filters @ $6.00 per filter x 8 = $48.00
. TOTAL $148.00

AMSOIL recommends 25,000-mile/1-year drain intervals
AMSOIL 10W-30 Synthetic Motor Oil
*(5 quarts needed for 25,000 miles)

@ $9.15/qt. x 5 =

$45.75

1 AMSOIL Ea Oil Filter

(Price varies per application)

$15.30
. TOTAL $61.05

*Comparison based on 25,000 miles driven per year and 5-quart oil capacity.

You save $86.95 per year using AMSOIL premium quality synthetic motor oil and AMSOIL Ea oil filters. And at Preferred Customer prices, you can save even more.

Even if you drive only 12,000 miles per year, the final cost using AMSOIL is less than you pay for petroleum oil now! Plus you get better protection, lower engine temperatures, improved fuel efficiency, easier cold-weather starts and less waste which is better for the environment. All of these benefits add up to reduced operating costs and longer engine life. Change your oil and filter today and in 12 months change the oil and filter again. That’s it!

What could be more convenient and better for your vehicle?

To read more about AMSOIL visit www.getmotoroil.com