[James Rogers]

This a case of "if a little is good, then a lot is better" and is not always true. I have an oil pressure gauge on my Cabriolet and watch it a lot. I have noticed that at times it will drop to 0# and not only when the oil is cold but when I throttle it hard. If you study the evolution of the pans and dipper trays you will see Brent is correct as far as depth of oil is concerned. The first trays had no trough persay but had narrow channels for the dippers. This was discontinued early on and the conventional tray we all have seen was used till mid 31 when it was detwermined that oil levels in the tray was the contributing factor to oil spray from the fill tube. This tube was changed 3 times over the 4 year production without success. In mid 31 holes were added to the tray on the flat to attempt to solve the spray problem with these holes increasing in size and number until the 32 model B engine. Late in 31 the tray was lowered and a shield added to the pump to control oil flow and depth in the tray. This only shows that engineers that worked with the motors every day found that, the oil does not need to be deep in the tray but, needs to fill the troughs only and the pump was overly sufficient for the engine. I have many trays to show the evolution from the first to the last. The basic design of the pump remained unchanged from start to finish even to the late 30's models.