Diesel Additive
What type of diesel additive would be good for keeping injectors clean,moisture control and maybe added cetane & lubricity. What do you use.
Forum Discussion
30 Replies
jason4598 wrote:
Stanadyne
X2- Seafoam makes stabilizers to use if the fuel is going to sit in the tank for a long period of time. If you have a pre-2008 engine then a lubricity enhancer is not a bad additive to put in the tank. No need for a cetane booster unless you want to drag race or do sled pulls with your RV.
As for water it is important to maintain the fuel filter and water separation unit and drain it periodically. Different for each engine so learn where yours are located and read the manual as to the maintenance required. And avoid biodiesel if at all possible and never put in B20. NinerBikes wrote:
drc5900 wrote:
Marvel's Mystery Oil year round.
Diesel Kleen White comes fall & winter.
And when it gets around 20 below zero or colder, isopropyl alcohol in addition to the Diesel Kleen White.
You may call me Doctor Overkill, that's okay, but I haven't had any fuel gel up or fuel lines freeze yet in Minnesota winters.
No engine issues in 300K+ miles. Other issues, yes, but never engine issues.
Adding any alcohol to a Bosch HPFP based Common Rail diesel is death to the High Pressure Fuel Pump. Anything that is operating at 1600 to 2000 bar pressure can not afford loss of lubricity to the fuel on American standard D2 diesel fuel. Don't do it, if you own a newer diesel truck or VW or Audi or Porsche Cayenne TDI.
I have the mechanical Bosch P7100 Fuel Pump on a Cummins 12 Valve Diesel Engine. Besides adding the alcohol, I also add lubricant.
What do you do to keep the moisture out of your fuel?- Here in Texas, the only two additives I would bother using are a biocide (especially with B5 common and B20 becoming more so), and an anti-gel come winter.
drc5900 wrote:
Marvel's Mystery Oil year round.
Diesel Kleen White comes fall & winter.
And when it gets around 20 below zero or colder, isopropyl alcohol in addition to the Diesel Kleen White.
You may call me Doctor Overkill, that's okay, but I haven't had any fuel gel up or fuel lines freeze yet in Minnesota winters.
No engine issues in 300K+ miles. Other issues, yes, but never engine issues.
Adding any alcohol to a Bosch HPFP based Common Rail diesel is death to the High Pressure Fuel Pump. Anything that is operating at 1600 to 2000 bar pressure can not afford loss of lubricity to the fuel on American standard D2 diesel fuel. Don't do it, if you own a newer diesel truck or VW or Audi or Porsche Cayenne TDI.- Per Cat and Cummins, there are two times that additives are recommended:
Storing summer grade diesel (#2 diesel) into below freezing temperatures. So if you fill up in the summer or fall, this could be an issue. BTW filling up before storing is HIGHLY recommended as it reduces condensation.
The other recommendation is if storing diesel for over 2 months in summer or 3 months in winter, add a BIOCIDE. You can find them at any marine store, as boats have the same fuel storage issues as do motorhomes. - Marvel's Mystery Oil year round.
Diesel Kleen White comes fall & winter.
And when it gets around 20 below zero or colder, isopropyl alcohol in addition to the Diesel Kleen White.
You may call me Doctor Overkill, that's okay, but I haven't had any fuel gel up or fuel lines freeze yet in Minnesota winters.
No engine issues in 300K+ miles. Other issues, yes, but never engine issues. gswcgi wrote:
I have spoken with factory technicians at Caterpillar and Cummins and they both say not needed!
Untreated Diesel fuel gels at 26°F.
That is why the owner's manual for my Sub says to use an "anti-gel" fuel treatment when the temperature is expected to be below 30°F.- I have spoken with factory technicians at Caterpillar and Cummins and they both say not needed!
