Switching to Red Line synthetic oil (Engine, Transmission, and Differential) has been dyno proven to add up to 5-10hp over other lubricants. 5W20 is the recommended viscosity for a 15-17 Mustang 2.3 EcoBoost, 05-10 4.0 V6, or a 94-95 Mustang GT and Cobra with a 5.0 V8.
Red Line’s synthetic motor oils are designed to provide the highest protection, cleanliness and superior drain intervals with the lowest friction for your Mustangs engine. They use the most stable components available and formulate products for wear protection and friction reduction across a wide range of engine operating conditions. Red Line's products are unique because they contain polyol ester base stocks, the only lubricants which can withstand the tremendous heat of modern jet engines. These synthetics have a natural multigrade property which allows our chemists to avoid bulking up an oil with unnecessary additive packages.
Aftermarket oil pans may require additional quarts. We also recommend referring to your cars owner’s manual for vehicle specific quantities.
V8 normally require at least 7 Quarts
V6 and EcoBoost I4 normally require at least 6 Quarts
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