Problems with using to much diesel fuel additive?

[Pitbull]

Has anyone harmed their vehicle by using to much diesel fuel additive? I use Rotella DFA at 6 oz's to every 10-12 gallons of fuel. The standard (recommended on the label mix ratio is 1 oz to 3 gallons) It does state you can pour the entire bottle in the tank and then just keep adding diesel as needed. Am I wasting my money, harming anything or just providing better lubrication and increased cetane levels? Truck starts and runs great.

 

[Intelman34]

I was wondering the same thing. I know it can't hurt with Power Service and that it doesn't increase the cetane anymore than the max of 6 points, but I am wondering if it lubricates more.

 

[Pitbull]

TTT