ES Compleat OAT Optimax Extender, 1 Quart Bottles

Provides superior diesel engine protection against freezing, boil-over, cavitation, liner pitting, erosion, corrosion, elastomer gasket degradation, and scaling, with one replenishment of ES Compleat OAT Extender liquid.

Usually ships in 1-2 days: This item is in-stock at our warehouse(s). Orders for in-stock items will generally ship the same day if the order is received prior to 12:00 pm CST. Orders received after 12:00 pm CST will typically ship the next business day. For bulk quantity orders, please contact our Customer Service team to confirm the quantity we have in stock.

Usually Ships in 2-3 weeks: This is a special order item and may take up to 4 weeks to be delivered. Please note that delivery times may be longer for some items, depending on the product. Our in-stock inventory is constantly growing as we monitor increasing demand for Special Order products. If you'd like to see us stock a particular product, please contact our Customer Service team.

While SimplyFilter makes every effort to provide current stock status, products listed on the site as in-stock may occasionally be on back order. For questions related to order lead times, bulk quantities and special order items, please call our Customer Service at 515-303-0262.