Re: Recommended oil for a 352 (56 Super)

Posted by Tim Cole On 2022/9/23 9:48:51

Modern cars do the same thing. 10w-30 is not to imply that oil viscosity is constant. It means the viscosity when cold is equivalent to a 10 weight oil and when hot a 30 weight oil. The 10 weight oil cold has a higher viscosity than a 30 weight oil hot.

The rule of thumb is minimum 10 psi per 1000 rpm oil pressure. With the standard ratio the motor is turning around 2,500 rpm at 60 mph.