To all you mechanical wizards: My 1953 Allis CA initally was raised on 30W non-detergent. Recently I went to 10W-30 high detergent. Noticed little decrease in oil pressure, ran 20hrs +, changed oil. Put same 10W-30 back in, noticed a loss of oil pressure again. Few days back hauling a load of firewood, approached steep grade....you know the type.....engine holds back but just can"t. Right after that oil pressure went to almost nothing. Engine runs fine, temp very normal, oil pump works cause it sprays like crazy with oil filter off, and engine is full, oil filter and housing full. Can you fellows help me out. Do I have a bad oil gauge?
Thanks
Thanks