Secondary oil circuit for turbos?

[Minty Ferd]

I'm working on getting twin turbos on my 89 7.3 idi. And I'm thinking instead of using the engine oil, I could make a secondary oil system just for the turbos. For that I would just need a oil pump capable of constant pumping, a oil reservoir, some oil lines, and a switch. The advantage would be that if the turbos blow a seal, it doesn't use up the motor oil. thus I could still drive it and get home.

Anyone have a recommendation for such an oil pump? Turbos only need 40-45psi of oil pressure.