Quote:
Originally Posted by ToyotaTechGeek
rotella is diesel engine oil, isn't it?
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Rotella has the API certification required for many car engines, such as MK2's, and the additional API certification required for diesel engines which means more phosphorus (keeps engine clean) and more zinc (protects moving parts). Most standard oils for cars could not pass the additional tests required for diesel engines because those oils can not withstand the pressure and stress that oils like Rotella are formulated to take. And no, I am not a Rotella salesman.
