Join Date: Sep 2014
Location: Summers in YT / Otherwise SWPA
Thanked 86 Times in 78 Posts
iTrader Score: 0 reviews
I understand Cummins recommends it. I have no idea why - they aren't known to have given a reason.
I doubt, as has been said, that it is because they get a kickback. It would be a trivial amount versus something like x brand diesel fuel - or tires - or recommending their own additive. I find a significant MPG increase and engine quieting when I use it in my mildly modified 1998.5 24 valve. I find NO difference when I use it in my 2015. I've tried it, on and off, many times and observed no effect. The high mileage drivers here seem to have tried it, and report no detectable benefit. People from the far north and deep south report no detectable benefit. people from dry and humid climates report no detectable benefits. Heavy haulers to semi-monthly grocery getters report no detectable benefit. I've never heard of a warranty denial for not using it.
If you're not included in one of those groups give it a try and let us know the result. Otherwise join the crowd of happy non-users.
2015 RAM 3500 CC LB SRW, 4x4, Aisin, BigHorn, 8.4an, Husky-X, Duraflap, cabin air filter, LTX MS/2, Maxiscan MS310, Super Z cables, US Cargo 60K recovery strap. Also 1998.5 NV4500, RWD