AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil

AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil – A popular upgrade in worn engines from 5W-30

The High-Mileage line is The Best Value in Sioux Falls

A super value 10W-30 comparing price to other “so called synthetics” when this is the minimum additive package in a quality line most cars need set at a competitive price. Excellent detergency not available in other oils in this class and it’s a true synthetic. You will know immediately when you first switch. And the best part it’s now in stock at Stan Houston’s on W. 12th St!

Our First Level Do It Your Self Synthetic in a 10W-30

This belongs in a blog but I’ll lay it out here..
So we have 5 tiers in all for gasoline cars. The lowest is a new semi-synthetic for lube centers to help them have a better product for all customers. The next is our OE which is also designed for service shops needing a premium 100% synthetic at a cost to retain repeat business. Then this – the High Mileage which is a full additive synthetic for those who want the best but don’t need competition or “enthusiast” level synthetics. This product has a longer drain interval and in two oil changes will clean up an engine in the time it takes the competition to do in FIVE!

Above this we have the Extended Life which is a top tier 20K synthetic for extreme heat and then our Signature which can withstand abuse dished out by the toughest driving and small sump turbocharged cars.. SO in summary this High Mileage oil overlaps 90% of all driving conditions and the tough demands modern engines have on the lubricant.

Preventive maintenance that includes high-quality lubricants is key for keeping vehicles safe and dependable for the long haul. AMSOIL 10W-30  100% Synthetic High-Mileage Motor Oil is designed specifically for the unique demands of high-mileage engines (or engines which have been using oils which left deposits), helping extend the life of your vehicle.

This is the first step to help clean up that engine w/o needing to use an engine flush.

It delivers purpose-built protection at a time in your vehicle’s life where it could benefit from more-robust maintenance. It cleans and protects engines with boosted detergency and an additive package that fights oil breakdown and oil leaks.

I suggest a couple changes with this oil then switch to XL or Signature.  This is a great choice should you buy a used car with over 80K on the odometer or that vehicle you really don’t know the history.

LOWER Cost than the XL Line!!

See the Product Data Bulletin for full details.

Check Price or Buy

Buy in Stan Houston’s on W. 12th St or the Sioux Falls AMSOIL Dealer store at 47073 98th St (Exit 73 near TEA) or use this Online link to the Amsoil sale page if you are outside of the area.

Engine Cleanliness thanks to our High Mileage Oil Line

• Enhanced detergency to breathe new life into dirty engines.
• Removes deposit buildup to help restore peak performance.

Cleaning Requires a Durable Viscosity

• High Mileage 10W-30 Maintains proper film thickness in extreme operation.

Sludge Reduction

AMSOIL 100% Synthetic High-Mileage Motor Oil reduced sludge by 67%, ^VV demonstrating its cleaning power that helps engines last longer and perform better.

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Cleaning Requires a Durable Viscosity

• High Mileage 10W-30 Maintains proper film thickness in extreme operation.

Oil-Consumption Control

• Thermally stable across a wide range of temperatures.
• Resists volatility and oil consumption.

Leak Protection! Yes – no other competitor uses a QUALITY additive for this because it eats profits

• High Mileage 10W-30 Conditions seals to help prevent leaks. – Even the Signature Series is famous for reduced leaks

API Licensed so you don’t have to be worried about whatever

• Licensed by the American Petroleum Institute (API) to meet and exceed requirements commonly found in owner’s manuals.

 

Motor Oil Comparison Chart – The Chart You gotta see!

In Review 10W-30 High Mileage Synthetic:

• Unique chemistry for vehicles with over 75,000 miles
• Boosted detergent and dispersant package
• Enhanced anti-wear additives
• Reduced sludge by 67%,^VV demonstrating cleaning power that helps engines last longer and perform better
• Guaranteed Protection For 12,000 Miles/1-Year¹
• API Licensed

 

5/30 high mileage

By  RICHARD,  a  Verified Buyer  on  August 03, 2025
Awesome. Never had an oil the made a difference to the car that you can actually feel.

 

I was on a budget

By  JOSE,  a  Verified Buyer  from  California  on  June 15, 2025
I had to settle for the high mileage instead of the signature blend which is my usual oil. But I’ve been running it now for about a month in my daily driver (Ram 1500) and I do anywhere from 50-100 miles a day. Steep grades, mountainous highway driving, high desert heat upwards of +100°. And this oil has performed better than any other “synthetic” oil you buy at one of the generic parts stores. I don’t notice a big difference between the signature series and this one, but I like them both and so does my truck. Last oil change, my oil still looked like it had plenty of life left in it. Which is a good sign. And when I added the new oil (high mileage series) it made my engine run so smooth and quiet. Can’t wait for my next oil change when I go back to the signature series! Amsoil for life!