It cleans and protects engines with boosted detergency and an additive package that fights oil breakdown and oil leaks.

SKU: HM020QT Category: High-Mileage Motor Oil

AMSOIL High-Mileage 0W-20 100% Synthetic Motor Oil

Preventive maintenance that includes high-quality lubricants is key for keeping vehicles safe and dependable for the long haul. AMSOIL 0W-20 High-Mileage 100% Synthetic 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 150K on the odometer or that vehicle you really don’t know the history.

See the Product Data Bulletin for full details.

Download PDFProduct Datasheet

Product code : HM020QT-EA

LOWER Cost than the XL Line!!

Buy & Check Price& Bottle Sizes

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 0W-20 Maintains proper film thickness in extreme operation.

Sludge Reduction

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

Cleaning Requires a Durable Viscosity

High Mileage Synthetic 0W-20 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 0W-20 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.

0W20 (HM020): API SP, …………. applies to all, SN Plus, SM….; ILSAC GF-6A, GF-5, GF-4…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2 and 6094M); Chrysler MS-6395; Ford WSS
M2C947-A, WSS-M2C947-B1, WSS-M2C962-A1.

Look up your vehicle for that perfect oil filter and transmission fluid matches too!

Match Your VehicleProduct Guides

Deposits left from inferior motor oils and dealership free oil changes leave significant deposits. Use AMSOIL to get it clean again!

Save more $$ on this already low-cost synthetic by AMSOIL with your Preferred Customer membership!

Save 25%Join for More Perks Preferred customer Program

Motor Oil Comparison Chart

Customer Reviews

Never too late

By CHIP, a Verified Buyer from De. on June 03, 2024

I’ve used Amsoil for years with unbelievable results. My 2007 Triumph motor cycle is getting close to 100K miles and the valves, which call for valve adjustments at 7000, still doesn’t need any valve adjustments. Now I just bought a 05 Tahoe, and changed the oil as soon as I got it. I just wish it had a steady diet of Amsoil through it’s life. And now I have to hope this High milage formula will make it so it runs for many years to come

Motor is smooth

By CURT, a Verified Buyer from NH on June 08, 2024

Decided to try Amsoil over my go to royal purple. I am super impressed! No more valve chatter at idle

Switched to amsoil

By JEREMY, a Verified Buyer from Maryland on May 05, 2024

Switched to amsoil about a year ago in my 2015 JKU . Since the change I’ve noticed better starts and smoother acceleration. And small gains in RPM and power in 5th and 6th gear. (even with the ac on)

Coyote 5.0 F-150 This saved me quoted $4,000

By DAN, a Verified Buyer from Kansas on April 04, 2024

All Ford F-150 5.0 Owners with issues, Rough idle and dies at stop lights, sends multiple codes Timing, cam position sensor, VVT. After I took my 2016 F-150 165,000 miles, in for service, oil change, the check engine light came on and it started idling rough and dying at stop lights, when I talked to the mechanic he told me it was cam phasers and it would be cheaper to replace the engine $15,000. of course I got a second opinion, they said I needed to change the timing chain, and rebuild the heads $4,000. I decided to do some research of my own, found that many Ford F-150 owners had the same issue, many different tried fixes none worked, Changing the VVT solenoids seemed to work for some of them, so I purchased one of them so I could see how they work, long story short the VVT solenoid is piloted by oil. Oil in this engine is critical in the operation of the F-150s variable valve timing VVT, I looked back at the oil change records and they actually listed the brand and weight of oil they used in that last oil change Havoline 10W-30 and a Fram oil filter, that’s when the problems started!!! So I decided to try an experiment. I drained 1-quart and added 1-quart of engine flush, ran engine for 5-mins, drained all the oil, installed a new oil filter from Amsoil, and filled with Amsoil high mileage oil, I noticed immediately the sound of the engine was so much smoother. the check engine light was still on, but it ran so much better, after about 50 miles of driving the check engine light went off, I’ve been driving it now for about 4-weeks 300 miles, no issues with rough idle and hasn’t died at a single stop sign or stop light. Thank You Amsoil !!! saved Me an engine replacement and a whole lot of headaches!!!!

Order Line – 800-579-0580

High-Mileage 0W-20 100% Synthetic Motor Oil

AMSOIL High-Mileage 0W-20 100% Synthetic Motor Oil