1999 GMC B7 Fluids

Prestone Command Cor-Guard Nitrite Free (NF-OAT) Extended Life (ELC) antifreeze+coolant (Concentrate) is designed to work with all Class 1-8 vehicles; Heavy Duty and Light Duty. COR-GUARD technology increases uptime; More miles between service = Less cost to maintain. Utilizing Cor-Guard technology, this formula is designed to protect cooling system parts from corrosion and damage. It instantly protects against the spread of rust, corrosion, pitting, gunk, grime and build-up. It is one fluid that can be used for the whole fleet; all vehicles, coolant colors (LD) and any Nitrite Free OAT engine (HD). Service life is 1,000,000 Miles/20,000 hrs [class 7-8 with wet sleeve liners]. When compared to ESI and low silicate conventional, it is designed to help lower maintenance costs and improve water pump life. This formula is Nitrite Free, provides excellent protection for aluminum and all other engine metals and eliminates the need to add supplemental coolant additives. Volume: 1 gallon.

Prestone American Vehicles (Orange) antifreeze+coolant is specially designed to work with these specific vehicles: Ford 2002 and newer; Chrysler 2000 and newer; GM 1995 and newer. Prestone’s Antifreeze+Coolants are designed to the highest standards using state of the art technology. These fluids are designed to not only manage the engine temp and protect from freezing up, but they also protect the engine from rust, corrosion, buildup, pitting and engine damage. All of those can cause engine part failure and expensive repairs. Avoid costly repairs and vehicles in the shop with Prestone Asian vehicles antifreeze+coolant. This fluid is designed to last 10yrs / 300,000 miles and also to protect the internal parts of the engine for 10yrs / 300,000, officially patented by Prestone. Volume: 1 gallon.