Water in oil, sample showing .54%, should I be concerned?

Just water? No glycols or silicates? If its just water its likely not a head gasket or anything like that. More likely just crankcase vapours or maybe you had a bit of water leak in from an engine wash or something.

 

Change your oil, and sample again in about 10,000 miles.
That may help solve this.
Replace 1 gallon oil with 80/90wt gear lube, it's an what ISX fans do.
Because Lucas is useless.

 

The only problem with putting gear oil in the motor oil is it can cause the oil to foam them lose oil press.

 

It's been done by many ISX experts.

 

Actually I think it's only thing Lucas is good for. It's 50W oil but not much else. I can never figure out why guy's use it on perfectly healthy motor.

 

Lucas is not a high pressure lubricant.
Gear oil is. ISX the Dual cam ones like to spit cams. Because of many reasons. Cummins is also a low pressure oil system.

 

Roll the berings. (No I don't think it will help).

 

.54% water is not too much.

 

Who is these experts, that are using gear oil?? Is that a Cummins recommendation?