Oil pressure problem after change to synthetic.

[Unicorn]

going from non detergent oil used the 50's to modern detergent oils could possibly cause problems.

my 1954 Austin Healey 100-4 uses non-detergent oil. I'm afraid to run detergent oil for fear it will desolve oil buildup film on critical parts. needless to say it's hard to find, got a small stash of non detergent oil.

if your oil pressure was truly zero, you would know within a few miles. engine will destroy itself in short order.

Isn't racing oil usually non-detergent?