A couple of months ago I took my rig in for a recall notice. I've told this story before. (The dealer said they could not get the replacement part in 2 weeks, I got it in just a few hours, The national service manager for Workhorse put it in my hand himself)
Well, I suspect part of the reason he was so willing to deliver was a service bulletin Workhorse had just put out.
This had to do with after market mods such as the Ultra Power, Banks, K&N (they make a full cold air intake kit, not just a filter but the entire CAI) and others. The bulletin warned dealers that if the engine had been modified and if the modification had caused damage the warranty would NOT cover it.
People SCREAMED.. My post in the topic basically said "Why is everybody so upset, this is standard language in every warranty I've ever read.. Basically he's saying "We break it, or we don't put it in right, or it's not up to spec, We fix it, YOU Break it, YOU fix it.
So what does this have to do with adding ATF to Diesel fuel?
If the rig then develops a problem and it can be blamed on adding ATF to the tank... They are gonna blame YOU and make YOU pay for it. Warranty or not.
NOTE: This is standard practice in the industry. I'm not blaming anyone or making any startaling statements here. Any non-approved additives or modifications have the potential to void your warranty if it can be shown that they caused the damage.
And like the drug companies who have experts who testalie that thier products are safe and have no harmful side effects.
The auto companies including Workhorse, Freightlinger, Ford and _______ all have experts who will happily testify (or testalie) that your unauthorized modification is what caused the damage.
And in some cases.. They are telling the truth!!!!!!
NOTE: This post in no way addresses the issue of adding ATF to the fuel tank or the effect of it on the engine, I do not know if it will do good, harm, or, nothing at all. I've never tested or researched it.
But if the dealer finds out you did it.. Any engine or fuel problems you have down the road, They are going to blame on it.