Here are descriptions for the other QS/Q blends:
QUAKER STATE® SYNTHETIC BLEND MOTOR OIL for 4x4s, SUVs, and Trucks is specially formulated for these hard working engines. Engines in 4x4s, SUVs, and trucks are put under stress from pulling or hauling heavy loads. This stress can cause an increase in engine deposits or wear. QUAKER STATE® SYNTHETIC BLEND MOTOR OIL for 4x4s, SUVs, and Trucks is formulated to protect these vehicles in such harsh driving environment. (9/04)
Q® 4X4 & SUV SYNTHETIC BLEND MOTOR OIL is specially formulated to deliver maximum performance and power for hard working engines. Its heat activated molecules kick in under heavy loads and thermal stress, creating a low-friction, heat-resistant lubrication film. This advanced protective layer combats oil oxidation and resists thermal and viscosity breakdown, for better protection and maximum power. (1/07)
Q® Synthetic Blend Motor Oil provides extra protection from a combination of high quality base oils with an additive package designed to give you the performance you expect from Q®. Whether you driving your vehicle in stop and go traffic or pulling heavy loads off-road, you expect you vehicle to work hard. But hard working vehicles like yours generate friction and heat in the engine, which can break down conventional oils and rob you of power. (10/07)
QUAKER STATE® WINTER SYNTHETIC BLEND MOTOR OIL protects modern engines during low ambient temperature conditions where good flow at cold start is essential. Oil thickens at low temperatures and might lead to oil starvation at start-up and eventually to engine failure. QUAKER STATE® WINTER SYNTHETIC BLEND MOTOR OIL uses synthetic components for excellent cold flow performance. (6/05)