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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 4105R|
  • SKU: 1148730

Available today

Pay in Store Available

    • GUARANTEED to stop oil leaks
    • Seals common engine leaks within 300 miles of driving
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.

CD-2 Premium Stop Leak

CD-2 Performance products give you the protection you need for under the hood.
  • GUARANTEED to stop oil leaks
  • Seals common engine leaks within 300 miles of driving
  • Compatible with all grades of motor oil



CD-2 Premium Stop Leak is rated 4.3 out of 5 by 7.
Rated 5 out of 5 by from Great sealer! My wife car has a small oil leak with just one bottle was sealed.
Date published: 2016-11-12
Rated 5 out of 5 by from Excellent product Worked great.. No more leaks!
Date published: 2016-08-21
Rated 4 out of 5 by from very well is fine the product.
Date published: 2015-08-05
Rated 5 out of 5 by from Works well and does what it says it will do. Used this product on 1983 Honda V45 motorcycle that had developed a small oil leak when the bike was cold and unused for a week or so at a time. No issues when the bike was hot. I blended just half of the bottle with an oil change due to the small crankcase. Started the bike and allowed a slow warm-up and took about a 20 mile ride. during the warm up while still cold there were a few drops of oil. Since returning from the ride though there has been no further oil leak. The bike has been through several heating and cooling and riding cycles since the treatment and the small oil issue has not returned. Judging this result in cold weather I am pretty confident that there will be no problems in typical warm weather riding.
Date published: 2014-12-28
Rated 5 out of 5 by from This product does what it claims. I was getting oil stains on the garage floor from a small leak. I put this stuff in and the leak stopped. Just what I wanted. Good stuff.
Date published: 2014-11-24
Rated 1 out of 5 by from Waste of money Had absolutely no affect. It was a complete waste
Date published: 2014-11-09
Rated 5 out of 5 by from Excellent Product This Product Works Great For Small Oil Leaks Due To Dry & Worn-Out Seals
Date published: 2014-10-09
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