Engine Oil Substitute For 1950 Ford

[Ronnieroadster]

I use Valvoline 20-50 racing oil in mine.

Me three

 

[Arotarius]

Friend has said he uses the 15-40 Diesel oil, shell rotela was his recommendation.

 

[jackson]

I use this. 2100 PPM Zinc, formulated for older engines. Speedway Motors has it.

https://lucasoil.com/products/hot-rods-classic-cars/hot-rod-classic-car-10w-30-motor-oil