Since it poured like glue in Platts, he thinks it should have a higher number than 5W. He cannot comprehend that 5W20 is a multigrade oil that acts like an SAE 5 in cold temps, and an SAE 20 in hot temps.
He thinks that no matter what, an SAE 5 should always be thinner than an SAE 20, when the truth is, is that an SAE 5 in cold temps is thicker than an SAE 20 in hot temps.
(cold=around freezing or below, hot=around boiling)