2005 Audi S4 Oil Change Gone Bad
 

Had my son's 2005 Audi S4 oil change done. 50 miles after that oil change, the engine seized.
Found out they company used a Shell Rotella T6 5W-40 Heavy Duty engine oil which is designed for diesel engines only. (Catapillers, Front End Loaders, etc...)
According to the Audi website, this oil is not on the "approved" oils to be used.
Very thick oil!! Upper valve shaft broke due to no oil.

Is there anyone out there that can help with this? Looking for explanation.... This shop told me that this oil would not have caused that to happen even though it is the wrong oil.

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