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Receive Up To 25% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ25 at checkout to receive 25% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Paint, Splash Guards, Select Ventvisors & Bug Shields, Springs & Spacers, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, CV Axles, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Shocks & Struts, Chassis, Jumpstarts, Air Filters, Oil Filters, Bearings & Seals, Engine Parts, Wash Accessories,. Outdoor Lifestyle, Towing, Mini Air Compressors and Tire Repair Accessories.

Offers 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 in these offers will be displayed in product search results and product detail pages. Excludes the following brands: Champion, 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, Philips and BBK Performance. Valid online until 11:59 PM EST on 10/29/17.

Receive 25% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER25.

Receive 10% Off Select Champion, MOOG and FelPro branded products with your online purchase. Use promotional codes: CHAMP10, MOOG10 and/or FELPRO10.

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ProLine Extended Life Antifreeze 50/50 9366851
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  • Part #: PJA053|
  • SKU: 9366851

Available today

Pay in Store Available

    • Premixed, so it can be used as is.
    • Compatible for use in all automobiles and light duty trucks.

ProLine Extended Life Antifreeze 50/50

ProLine Extended Life Antifreeze uses inhibitors to provide maximum cooling system protection against damaging rust and corrosion. This antifreeze is premixed and compatible for use in all cars and light duty trucks.
  • Premixed, so it can be used as is.
  • Compatible for use in all automobiles and light duty trucks.
  • Can be mixed with any color antifreeze.
  • Designed to give your engine 5 year, 150,000 mile cooling system protection.
  • Meets ASTM D-3306 and ASTM D-4340
  • Antifreeze ensures the temperature of your engine stays consistent, allowing the fuel to be completely vaporized so it burns better with fewer emissions.
  • Check out our wide assortment of oil change tools and accessories, including oil filters, funnels and oil drop pans.
  • The Pep Boys Say: “Whether it’s hot or cold, it’s the cooling system that keeps your car running well. Maintain your cooling system to maintain your comfort.”
  • Product may vary by store.


ProLine Extended Life Antifreeze 50/50 is rated 4.7 out of 5 by 31.
Rated 4 out of 5 by from This product has great features this is good
Date published: 2016-09-19
Rated 4 out of 5 by from Works Fine I put it on a 210,000 miles 94' toyota camry. I dont need anything fancy for this ride!
Date published: 2016-09-14
Date published: 2016-08-24
Rated 5 out of 5 by from good stuff good stuff
Date published: 2016-08-23
Rated 5 out of 5 by from Inexpensive quality For the price it's a good durable antifreeze. Zero complaints. Lasts long.
Date published: 2016-08-20
Rated 5 out of 5 by from good product works as expected
Date published: 2016-08-19
Rated 4 out of 5 by from GOOD PRODUCT It was nice and good.
Date published: 2016-03-01
Rated 5 out of 5 by from Better than Brand Names! Works like the Rest and well worth the Price!
Date published: 2015-11-11
Rated 5 out of 5 by from Does not freeze I am down here in Los Angeles and I have used this product and it does not seem to freeze. Very easy to use unscrew cap remove seal and it starts coming out. Amazing!
Date published: 2015-10-13
Rated 4 out of 5 by from 50/50 PROLINE ANTIFREEZE Cheap and easy. Good product for the price.
Date published: 2015-08-08
Rated 5 out of 5 by from Everything Excellent Your staff was helpful, pleasant, efficient and helpful. The antifreeze was competitively priced. Thanks!
Date published: 2015-07-19
Rated 4 out of 5 by from Price was right Free car, cheap anti freeze....perfect
Date published: 2015-06-27
Rated 5 out of 5 by from works just fine good price and does the job
Date published: 2015-06-20
Date published: 2015-02-17
Rated 5 out of 5 by from Excellent coolant , excellent value With all the coolants available out there, why pay more when you can get the same exact thing for less. No sense in spending more than you have to.
Date published: 2015-01-27
Rated 3 out of 5 by from Average I bought it thinking it was blue antifreeze. It was actually green. The product said it could be mixed, but i did not want to possibly void my warranty.
Date published: 2014-12-26
Rated 5 out of 5 by from Antifreeze I am satisfied with this product. I am also very satisfied with the service at Pep Boys. The automative servicemen were very helpful and friendly. I appreciate their service.
Date published: 2014-12-01
Rated 5 out of 5 by from This product had the right price. My car was overheating, and this product fixed the problem.
Date published: 2014-11-30
Rated 4 out of 5 by from Just as good as the top name brands. My daughter in college came home complaining how her Altima was running rough and that the air conditioning was not cool. Come to find out that she was low on coolant/ antifreeze in the reservoir. Bought some from my local Pep Boys and have not had any problems since. Lower priced with high qualities. Good job Proline.
Date published: 2014-11-12
Rated 5 out of 5 by from Proline 50/50 Works great and keeps engine temp cool
Date published: 2014-11-05
Rated 5 out of 5 by from Good stuff Probably same as all coolants.
Date published: 2014-10-26
Rated 5 out of 5 by from great product, better price! I really like the fact that this is compatible with most types of anti freeze. I buy this all the time!
Date published: 2014-09-17
Rated 3 out of 5 by from Good Stuff worked well
Date published: 2014-08-11
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