The next time you check the oil level with the engine cold, look closely at the very top of the dipstick, also check the underside of the oil fill cap, those areas will be the spots where condensation will form if there is water in the oil. It's best to check that on a cool morning after the truck has been sitting overnight.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy