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Receive 25% off your total purchase of $100. Enter promo code treat25 in cart. Restrictions Apply; Certain Items Excluded. Click Here to Shop Now.

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25% Off Online Orders Over $100
Use promotional code TREAT25 at checkout to receive discount. Not valid on tires, wheels gift cards, special orders, installation, commercial or fleet purchases. Excluding the following brands; Edelbrock, Holley, Autometer, Accel, K&N, MSD, and BBk Performance. Not valid in combination with any other discounts or promotions. Valid online until 2:59 am EST on 11/1/14. Online orders scheduled for in-store pick ups must be completed in store by closing on 10/31/14 for discount to apply.

Free Shipping orders over $75
Free Ground Shipping on Ship to Address orders over $75. Offer only valid on in-stock merchandise valued at a total of $75, after any discounts have been applied, and before any core charges, shipping charges, fees and taxes have been added. Certain items exceeding weight and size limitations are excluded from all shipping promotions and may require additional shipping fees. Please see item descriptions or visit our Shipping Policy page for details.

Additives & Chemicals

Additives and Chemicals Resources

Pep Boys has all of the car additives and chemicals you need to maintain or improve your vehicle’s performance. From oil additives and transmission additives to brake chemicals and more, our wide assortment of engine treatments, additives and chemicals will keep your vehicle running safely on the road. Keep the air you breathe as contaminant free as possible with an air intake cleaner. To improve your fuel economy and even Save Gas Now, try our quality fuel additive line or check out our Fuel Service Packages. In addition to our additives and chemicals, we carry the right coolant and antifreeze for your vehicle. Order online and pick up in stores.