Is it safe to add Seafoam Motor Treatment to fuel tank for 6.7 turbo diesel? Ford manual says not to use additives with alcohol. Seafoam says it’s safe for diesel engines but it does contain some isopropanol.

 

Why are you wanting to add seafoam in the first place?

 

The motor is running rough and losing power sometimes. I had it in the Ford House one time and was talking to one of the mechanics about it and he said it’s a good idea to run some C-Tane through it occasionally to keep the injectors clean. I never found a product by that name and later asked another Ford Mechanic if the precious mechanic might have been talking about Seafoam and he said that would probably work.
The reasons and opportunity iTunes to talk to the Ford mechanics is that I’ve had issues with it multiple times. I’ve got 65k miles on it and have replaced the #6 injector twice, patched the part of the wiring harness that goes to the #6 injector and then on 2 different occasions had to have the computer reprogrammed. Those items are listed in chronological order. Everything has been done at a Ford House except the second #6 injector. We were traveling and we’re not able to get it to one. Ford did cover that injector with their warranty and reimbursed me for it though.
Seems like I might be better off getting g rid of this trick and getting g another. Thoughts?

 

Cetane is a component of diesel that improves the combustion of the fuel, like octane does in gasoline. There are a number of cetane additives on the market from amsoil, powerservice, etc. Any benefit you get from it is going to run out when the tank of diesel you put it in runs out. If your problems seem associated with certain tanks of fuel a cetane additive might help, but I doubt seafoam will change anything. As the lids on a lot of old diesel equipment say, "buy clean fuel, keep it clean" is still valid advice.

 

Is stiction even a problem on the common rail systems? I guess I thought it was just a problem fore the HEUI systems.
I'd be afraid to put seafoam in a common rail engine, I have read even a little gasoline in them like we used to put in to prevent gelling and it's game over for the fuel injection system.

 

this the only one we use

#ad