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The 2011 Cadillac SRX offers two engine options, the 2.8T V6 turbocharged LAU and the 3.0L V6 LF1, however, they both require the same type and amount of oil. You should use SAE 5W-30 full synthetic motor oil that meets the Dexos1 Gen 2 standard. If this specific oil is not available, SAE 5W-40 can be used temporarily, but it is not the ideal choice and should be avoided if possible. Opting for a heavier weight oil can lead to increased friction and wear, potentially causing damage over time. It is recommended to stick with the manufacturer's suggested oil with the lowest weight to ensure proper engine performance and longevity, even if it may be pricier initially.
The Cadillac SRX 2011 model requires synthetic motor oil with a viscosity grade of 5W-30.