Quote:
Originally Posted by 51woodie
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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I don't know about 59A's, but that looks normal for an 8BA. Do you perchance have the later pump? If so, that looks right. My 1953 Motor Manual gives factory oil pressure of 57 psi at speed. The '51 Merc in my '51 coupe idles hot at slightly over 20 psi and runs down the road at close to 60.