Use in all heavy-duty, diesel engine cooling systems equipped with green-colored Motorcraft® Premium Engine Coolant meeting Ford Specification ESE-M97B44-A  Part number is VC-8 (replaces the old part number of FW-16). This is sold by the pint (16 oz bottle). Typical use is 4 oz per gallon of coolant. There is a limit of 12 pints per order due to shipping limitions. Shipping is via FedEx Ground Home Delivery ONLY based on your zip code and will show the amount in checkout.