See Details

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

Close (X)

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.

Free Shipping on Orders Over $50 or in-store pickup

Zoom [+]
  • Part #: 750002|
  • SKU: 8985901

Available tomorrow

Pay in Store Available

    • Protects against friction and heat
    • Improves compression
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.

Slick 50 15oz High Mileage Engine Treatment

Comes with a 50,000 Mile Engine Limited Warranty
  • Protects against friction and heat
  • Improves compression
  • Reduces oil Burning



Slick 50 15oz High Mileage Engine Treatment is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from My Dinosaur I have been using Slick 50 regularly (every 50,000 Mi.) since 1999 on my 1999 Mercury Grand Marquis. The car now has 167,000 miles on it and performs excellently. The overall gas mileage on the vehicle registers at 25 mpg, and varies by a few tenths of a mile if we stay in town for a longer period of time. I believe Slick 50 has contributed to this great performance.
Date published: 2016-10-01
Rated 5 out of 5 by from this is Best product EVER! I live in Florida and have a race car engine my oil pick up tube was block before this happen had use slick 50 when my oil pick up tube was plug up not knowing this happen the temp was 98 drove 100 miles round trip notice my oil pressure was zero. Pulled engine out store in shead for 2 years never went out turn crank in 2 years. One day wanted find out what had happened was told engine should be lock up for not turning crank in 2 years . I turn the crank to my surprise it turn. Fix oil pick up tube change oil engine ran like brand new. Thanks to slick 50 I rate 20 stars if I could this product saved me thousands of dollars
Date published: 2016-10-01
Rated 5 out of 5 by from Wisest protection for your vehicle I've used Slick 50 for 30 years on my several different vehicles. An engine flush, synthetic oil, and Slick 50 has kept all my new and used vehicles running smooth as butter.
Date published: 2016-08-21
Rated 5 out of 5 by from this product is different from synthetic oils Regardless that many say synthetic oils are just hype and just a marketing ploy, Slick 50 really works well for old engines to help seal leaks and to extend the life of the engine. I have used it for close to 30 years after having good experiences from early on.
Date published: 2016-08-04
Rated 5 out of 5 by from Super slick 50 I have been using this for 30 years. It has saved several motors of mine with blown head gaskets or holes in oil pans. Amazing what a little Teflon in the motor can do. Also help engines to run cooler, esp. New tight motors. Better gas mileage? Probably but small like 3%. This is cheap and great.
Date published: 2016-04-04
Rated 5 out of 5 by from Slicknessistery This will get you better gas mileage, cooler engine temp and save you engine in many oil failure modes
Date published: 2015-08-11
  • y_2017, m_3, d_4, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_8985901, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_pepboys