Community Forums

expedition1 · 10-04-2014, 05:45 PM

I have a DP with a C-7 engine. How often are people actually changing both fuel filters? I have been changing both out once every 2 years which in miles comes out to approx. 10,000-12,000 miles. I do know that trucking companies go a lot longer than that. Just wondering if I am changing out too soon. Thanks in advance for any feed back.

wb7auk · 10-04-2014, 06:20 PM

Change both at 10,000 miles or 12 month or 1,000 gallon fuel which ever comes first.

DieselTech39 · 10-04-2014, 06:26 PM

Quote:

Originally Posted by wb7auk

Change both at 10,000 miles or 12 month or 1,000 gallon fuel which ever come first.

Best to insure no problems IMO.

wb7auk · 10-04-2014, 06:31 PM

I might add be sure filters meet Cat spec's on micron rating.

Finally · 10-04-2014, 06:50 PM

I change both every year.

wimberleyman · 10-04-2014, 10:09 PM

X2 on the change both every year. I believe that's the Cat recommendation.

WM

koda59 · 10-04-2014, 10:46 PM

I change both my fuel filters every year.

Air Baron · 10-05-2014, 07:59 AM

Depends on whether or not you put biodiesel in the tank, how full you keep the tank when it sits and for how long, whether or not you use a fuel treatment before storage. When you get a fuel restriction warning, then you know for sure it is time to change. Mileage for RV usage is probably a non-issue.

Gary RVRoamer · 10-05-2014, 04:43 PM

I change the primary every spring. Not sure the secondary (engine side) filter needs to be changed that often - the primary does most all the work, including water removal.

I've been running my genset fuel filter 2-3 years, depending on usage.

docj · 10-05-2014, 04:59 PM

My primary filter costs ~$30; my secondary costs ~$20 and that's for a CAT filter. For $50/year I'm quite willing to replace them both every year. My typical 10-12,000 mile year costs me $5-6,000 in fuel. IMHO trying to save a few dollars on a fuel filter is false economy.