Additive for Diesel fuel in Duramax
According to the dealer I use GM is recommending a new additive they are marketing for the Duramax. It is part number, 88861009, Conditioner, Diesel Fuel 325 ml (11 oz). Has anyone used or know anything about it? I have been using it for about 1000 miles. My fuel mileage did improve, I am now getting 18.9 city and 23 highway unloaded.
Anything anyone can add would be welcome.
Regards,
JimO
Amsoil Additives for Diesel Fuels
Has anybody in Diesel land used any of the Amsoil Additives for Diesel fuel, like the Diesel concentrate & the Cetane boost additive?