If your cooling system is that weak, how would it ever pull or haul a load? I've had 8 ton of gravel on my 48 and drive it 5 miles home with the gas pedal flat on the floor, never getting above 35 MPH. Never got too hot. If that's not drag on a truck, I don't know what is,
Scott

Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)

Raising a teenager is like trying to nail Jello to a tree!