The 2005 Honda Accord comes in one of three different engine variants, depending on configuration. You'll either have a 2.4L 4Cylinder or one of two different 3.0L V6 engines. The 4Cylinder requireS4.2 quarts without a filter, or 4.4 quarts with a filter, of SAE 5W-20 full synthetic motor oil. Both V6 variants each use 4.2 quarts without a filter, or 4.5 quarts with a filter, of the same. In either situation, it's possible to substitute SAE 5W-30 over the short term, but this is not recommended if You can avoid it. Using an oil with a thicker viscosity introduces friction to the engine, which can lead to premature wear and tear and early engine failure. Even if it costs a bit more per change, You'll always want to use the manufacturer's recommended oil with the lowest viscosity.
John A.
January 2, 2020
The 2005 Honda Accord's two versions of the 2.4L inline-4 engine (engine codes K24A1 K24A4 and K24A4 1) both take 4.4 quarts of 5W20 synthetic oil while the two versions of the 3.0L V6 (engine codes J30A4 5 and JNA1 6) for the 2005 Accord require 4.5 quarts of 5W20 synthetic.
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