Perkins 4-108 oil

[Randy]

Is anyone using Chevron DELO 400 Multiviscosity (W20-50) in their 4-108 ? Considering swithching over from straight 30W

[captsandy]

There is nothing the matter with using multi viscosity oils. Actually 10 W40 would be closer to the 30W you are using. You may see a slight increase in your oil pressure. The important thing is that the first letter that you see in the circle on the oil container has to be a C and not a S. C stands for compression ignition and S for spark ignition. The letters after that address the additives in the oil.
   Sandy

[Randy]

Thanks Sandy. I'll confirm letters. In retrospect, I am using Delo 10W40, not 20W50.