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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code FOUND25 at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 2/27/17. Online orders scheduled for in-store pick up must be completed by closing on 2/26/17 for discount to apply.

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  • Part #: 10001|
  • SKU: 9103342

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    • Extends oil life and lowers oil temperature in any engine - gasoline or diesel
    • Raises oil pressure, reduces smoking, leaking, knocking and blow-by in worn engines
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

Lucas Oil Heavy Duty Stabilizer

Lucas Heavy Duty Oil Stabilizer is the #1 high performance oil supplement in the United States. It eliminates dry starts and resists thermal breakdown for total protection in engines, gear boxes and differentials.
  • Extends oil life and lowers oil temperature in any engine - gasoline or diesel
  • Raises oil pressure, reduces smoking, leaking, knocking and blow-by in worn engines
  • Safely blends with all other automotive lubricants, even synthetic oil
  • Increases lubricity and film strength to reduce friction and wear in new or older engines



Rated 4.7 out of 5 by 59 reviewers.
Rated 5 out of 5 by Good product Lucas products always outperform. November 21, 2016
Rated 5 out of 5 by better tan expected I have used before one time. Didn't new how good it was . November 11, 2016
Rated 5 out of 5 by Great product! I've been using this product for years with good results to my truck's engine,almost 250,000 miles and still going. October 23, 2016
Rated 5 out of 5 by Great oil for keeping older engines protected This is great oil for your older engine I use it in three cars a truck and a boat I have and it does help reduce oil consumption and smoke from older engines October 20, 2016
Rated 5 out of 5 by Great product Lucas works great for the problem i had October 18, 2016
Rated 5 out of 5 by good stuff good product good company October 11, 2016
Rated 5 out of 5 by Increased gas mileage! I decided to try this product for the first time with an oil chagne. This product has improved the gas mileage of my vehicle. I usually monitor mileage on my trips from Virginia to Delaware. After using this product, I achieved a 2.1 and a 2.2 mpg increase on each of my last 2 trips. I did not change the way I drive intentionally, This is significant. September 7, 2016
Rated 5 out of 5 by Good stuff for old engines I like to add some to my in-between oil changes to my older engines. Nothing wrong with this product going into your gasoline engine. September 1, 2016
Rated 4 out of 5 by ok works as advertised, easy to use, easy to install August 26, 2016
Rated 5 out of 5 by Excellent performance Great product that adds performance to any oil. August 10, 2016
Rated 5 out of 5 by wonderful lucas The best stuff for your engine this Lucas Oil Stabilizer is ... longer intervals between your oil changes too ! Saves you wear and tear on the engine and don`t forget about money as well August 9, 2016
Rated 5 out of 5 by Very Satisfied Honestly, I am not auto maintenance knowledgeable to the extent that I can say that this product done what it is suppose to do? I added the product to my oil tank based on the recommendation of a mechanic at Pep Boys and I have complete faith and confidence in Pep Boys employees to guide me in the most professional manner, to either correct or assist in the maintenance issue without a major project and at minimum cost. I go to Pep Boys for all of my auto maintenance on my two cars and am totally satisfied with the service and support that they provide. August 1, 2016
Rated 5 out of 5 by Worth ten times the price This stuff goes to work the second it hits your parts. My 1999 Cherokee ran smoother the second this stuff was added. Oil pressure improved as well. July 18, 2016
Rated 5 out of 5 by This product is worth the investment Puts my mind at ease knowing that my oil and engine are working better with Lucas Oil Heavy Duty Stabilizer, thanks! November 10, 2015
Rated 5 out of 5 by Great oil additive I have used Lucas ever since my previous company carried it & still buy it today. November 7, 2015
Rated 4 out of 5 by Seems to have slowed my oil consumption..... I use a lot of Lucas Products and they have never let me down, This seems to have slowed my oil consumption down, but I have not used it long enough to know if it really offers any other benefits or not. October 20, 2015
Rated 5 out of 5 by This product never fails to meet the problem. We have used Lucas products for many years and have always been pleased with the product(s) performance. September 12, 2015
Rated 5 out of 5 by Great Product For use on many vehicles, like cars and trucks with some milage, over 100K. Use only 1/3 to 1/2 bottle added just after or with oil change. This smaller amount makes your oil into racing oil and is great for engines say 110k up and over 200,000 miles, the engines just love it. Smooth running, quiet, greatly reduced oil consumption, becasue of the new thin oils, 5-20 and 10-30, etc. These 5 and 10 weight oils won't protect an engine with 125,000 miles on it. August 25, 2015
Rated 5 out of 5 by Lucas Oil Stabilizer = Awesome I have ran Lucas Oil Stabilizer in all my vehicles. You can see the difference in the operating temperature of the vehicles. I had a 2000 Dodge Durango with 200K miles. I totaled it by ruining the under carriage. However when the repair shop looked under the hood and saw my performance parts I added, I also told them I always ran Lucas Oil so they decided to remove the valve cover and said the Engine and valves looked like new. I recommend Lucas Oil and will always use it.. Next time you are in the store ask about their store display with the gears. Turn it and watch how the regular oil drains to the bottom, while Lucas keeps all the gears lubricated. August 25, 2015
Rated 5 out of 5 by Great product for older cars This product improves oil pressure and makes older engines run smoother. Improves hydraulic lifter performance. August 24, 2015
Rated 5 out of 5 by Have older suv Bought used ford explorer had ball bearing sound in engine dealer said it was normal i new better used Lucas oil stabilizer at 72k miles now have 152k every oil change keeps my engine alive i use it in every vehicle i own better starts in winter and cooler running engine in summer i don't think my ford would have got past 90k with out it thank you Lucas. Steve July 31, 2015
Rated 5 out of 5 by Lucas Oil Stabilizer Good stuff! My mechanic at the time recommended it and I have used it for 6-7 years. My 04' Jeep Grand Cherokee has the Mercedes V-8 w/ 195K on it. The product keeps the engine quiet, less oil usage and a little better milage. I use it in all my gas powered anything. July 30, 2015
Rated 5 out of 5 by Welcomed surprise Lucas r the best products in the world July 25, 2015
Rated 4 out of 5 by good product for my all Ford F150 Reduce motor temperature and motor sounds. Help with the motor gasoline consumption July 13, 2015
Rated 4 out of 5 by A Little Goes A Long Way! My Ford Ranger has 147k miles and is getting just a tiny bit loose.. I added about 8 ounces to my 4 cylinder engine and it DOES run cooler and quieter! I think it even picked up a couple of horsepower. However, I would caution users of this product NOT to use too much. More is NOT always better! These newer engines are designed to run on very low viscosity oil (5w 20) and exponentially raising the oil viscosity could be disastrous! So, if you own a 4 cylinder, DO NOT put in a full quart of this stuff!! June 2, 2015
Rated 5 out of 5 by great features ease of use and product features are what my vehicle needs May 30, 2015
Rated 5 out of 5 by Can't beat Lucas products Lucas Oil Heavy Duty Stabilizer Has helped me to extend the life of my engine for an extra 200,000 miles. This product works miracles. You have to try in order to believe in it May 18, 2015
Rated 5 out of 5 by Great additive for a high mileage vehical I use this in 2 of my high milage autos at every oil change. It has good start up protection and keeps the oil's viscosity stable even high tempatures. March 28, 2015
Rated 1 out of 5 by Excellent product! I love this product. It preforms well. January 23, 2015
Rated 4 out of 5 by Great heavy oil. Good stuff for hot summer driving in an older vehicle. I used this during one of my later oil changes, as a substitute for one of the quarts of oil. The product helped quiet the valve train, and my truck ran cooler also. January 22, 2015
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