Greentech Promo Codes for August 2026

All gasoline fuel saver models are 15% off during the summer road trip season. This applies to G10A, G10, and G11.

Greentech store cardholders receive 15% off their subsequent order. This is a loyalty program benefit.

Large fleet fuel management systems are available with a 40% discount. This applies to bulk fleet orders.

Utilize Klarna or Afterpay for flexible payments on purchases exceeding $35. Both options offer interest-free installments.

Active and veteran military personnel receive 15% off their entire order. Verification may be required at checkout.

The Gasoline Fuel Saver Model G11 is available for a fixed price of $75. This is a special individual unit price.

The G-Ball Fuel Enhancer has a 12% reduction in price. This applies to single unit purchases.

Receive 15% off when you purchase an agricultural vehicle fuel saver. This discount applies to all sizes.

The Diesel Fuel Saver Model D10 starts at a special price of $89. This applies to individual unit purchases.

First-time buyers can get 10% off their initial purchase. This applies to all products in your cart.

Certain truck fuel efficiency kits are available at a discount of up to 30%. This offer applies to bundled kits.

Take 20% off fleet fuel management systems as part of our end-of-year budgeting promotion. Offer valid for bulk purchases.

Celebrate Earth Day with 12% off all fuel enhancing products. This includes G-Ball and D-Ball units.

Industrial fuel savers are marked down by 18% during our spring promotion. Discount applies to select models.

Refer a friend who makes a purchase and receive 10% off your subsequent order. Credit applied after friend's purchase.

All motorcycle fuel savers are currently 10% off. This offer is valid for individual purchases.

Purchase a Marine Fuel Saver with a related accessory and save 25%. This discount applies to the combined price.

Get early access to Black Friday savings with up to 50% off on chosen fuel saver kits. Limited quantities are available.

Purchase a D-Ball Diesel Fuel Saver and receive 10% off any other single item in your cart. Discount applies automatically.

During tax season, receive 15% off all diesel fuel saver models. This offer helps you save on vehicle expenses.

Orders totaling $99 or more qualify for free standard shipping. No minimum item quantity is required.

Select emission reduction devices are discounted by 20% for a limited time. Offer valid during the seasonal automotive sale.

Split your purchase into interest-free payments using Klarna for orders above $50. No additional fees apply.

Receive 15% off the listed price for specific gasoline fuel saver models. Discount applies automatically to qualifying items.