I'm planning to change my engine oil. However I noticed I accidently bought C3 instead of A3/B4 which is currently in the engine. The operating engine is a Corsa C 1.4 from 2002. Could this do any harm? Should I return it in favor of the A3/B4? In the user manual A3/B4 or higher is recommended, but isn't mentioning C3 at all. Thanks!
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Quick google gives this: castrol.com/en_au/australia/car-engine-oil/engine-oil-viscosity/… You should be able to decide... – Solar Mike Aug 27 '19 at 11:58
C3 fulfills all the A3B4 requirements, so it should be alright. Due to the lower SAPS content you could think about replacing the oil earlier.
