Premium Member. Important: The use of diesel fuel additives is not required or recommended for the 6.5L diesel or the 6.6L Duramax® Diesel engine under normal conditions. The filtering system is designed to block water and contaminants without the use of additives.Feb 6, 2007
What diesel additive does GM recommend?
ACDelco Fuel System Treatment Plus-
Can I use diesel Kleen in a Duramax?
Registered. Diesel Kleen works good and costs a heck of a lot less than Stanadyne. To keep the cost down I buy the DK gallon concentrated and gallon of Lucas then mix 50/50.May 17, 2015
Does GM recommended fuel additive?
In the event that your customers refueled with low-quality diesel gas, GM recommends adding ACDelco Fuel System Treatment Plus – Diesel (available through your GM Parts dealer) that can help clean engine deposits.