Re: Flathead Engine Oil Pressure ?
The 59AB in my '46 Coupe seems to have higher oil pressure than normal I guess. When I bought it five years ago, I started with 15-40 Rotella, then switched to 10-30, as I thought the pressure was too high, base on comments on this site. The oil pressure stayed the same at operating temp. The pressures are as shown on the attached pics. I have 180 stats, and the engine runs just like Henry built it.
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