I mentioned in another thread that I emailed Opti-Lube concerning if it meets Ford's specs. Here is their response:

I guess without knowing what Ford's "specs" are it's hard to say. Not sure you would even get a clear answer from Ford if you asked them what the specs are that they are referring to in the manual.

 

does ford have an "opti-lube" additive tester?

 

What were you trying to determine? I'd expect you'd get a similar answer out of any of the major additive companies.

 

I've used opti-lube in every tank of fuel since the truck was new.

 

I have used opti lube in my 6.0,6.4 and now my 6.7 religiously and have never had any issues.

 

have you ever drained any water?

i use opti as well. They claim to be a deemulsifier, which is supposed to remove water . Over the last 8 years, never any water in the seperator.

 

I have never found any water. Could just be that my fuel didn't have any water in it.

 

I haven't found any water in a few years, and I don't use any additives.

 

I have never had any water issues, maybe a drop or two. I usually drain into a clear container and let it settle a few days and check. I can only recall seeing a couple drops once or twice.

 

Same. Where do you live? Most of my diesel driving has been done in the northwest over the last 18 years. Just a few drops. I always wonder where this bad fuel is coming from that people are draining out all this water.