I don’t think the sticks are meant to be exact, more of a “it’s good to drive” over dull and it’ll splash off the counterweights of the crank and air-ate, and foam the oil. Not good for lubing sensitive parts, too low it’ll starve for oil. Long as your in between the two you should be good lol. Allot of the next gen machines CAT is putting out has two sticks. One up top that I go by, and one down low so you don’t have to climb on the machine to check the oil…. But the swing drive is up there and you have to climb to check the oil level on it (I have no idea…. Engineers.) anyways, the top one will read perfect right on the money, and the lower one will always read over full. It could possibly be for towing, more capacity to keep it cooler. Possibly high RPM, to keep enough oil in the sump if the pump turns 1:1 with the crank (I’m still blown away by that, must have a seriously robust oil pump shaft if it runs off the cam like the 318/360 it’s designed from.) I haven’t been inside a V10 so I’m learning here lol. I know when I built my 360 magnum for my 91 D150 it was mentioned to get a stronger pump shaft if going with a volume oil pump, they have been known to shear at high RPM trying to pump oil around. Dang it!! I rambled lol. Increased capacity to keep oil in the sump during high RPM to keep from starving oil because it has a series oil pump lol. Of course a V10 has a longer block and internals so a higher pressure/volume pump to make sure the oil reaches everything (I’m assuming and that’s dangerous lol, these 8.3 have a rear pump location like the 318/360? And being in a truck, rear sump…. Smart thing for drag racing as the force pushes all the oil to the rear of the pan. I gotta stop rambling lol.
