6cylindersovertexas,

I agree with you (I had been told the same as you about the oil return). That is why I added a correction with the photo of a 261 from the 1960 Shop Manual that shows direction of the flow.

Maybe the photo is labelled incorrectly (for direction of flow), or the 261 is different from the 235 (I doubt that).

I can't be sure that the oil pressure sender on my 261 had not been changed before I bought it in 1972, but the oil pressure sender was on the fitting on the right side of the filter canister and that line went to hole on the lower rear side of the engine.

Maybe someone else will clarify this.

Tim

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.