Diesel mixed with grease extends filter life

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Rolf's picture
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Joined: 12/12/2008

I have been backflushing 1 gallon of diesel into the grease tank, 12 gallons grease for 1 gallon diesel, just the 1 gallon mixed in has extended my filter life to over 6,000 miles and I only filter my grease to 10 micron. How is it the diesel makes such a difference? Typically I get 3,000 miles out of a filter using 10 micron grease

veggpwr's picture
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Joined: 09/27/2010

Assuming it is a GC system, you probably have the "T" installed before the VO filter (between the VO tank and VO filter).
You will have the same effect on the VO filter without mixing WVO with diesel if you re-locate the "T" after the VO filter.
So everytime when you purge you back purging the VO filter too to increase the filter life.

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'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20-30%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

RenedeLathauwer's picture
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Joined: 08/14/2005

Rolf,
Something to think about.  If you are back flushing the VO filter, where is all that junk going to - tank, fuel, where?  Don't know how you are cleaning the WVO, but the frequent changing of VO filters might suggest that the cleaning process needs to be looked at more closely, IMHO....

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veggpwr's picture
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Joined: 09/27/2010

FYI only.
Originally the "T" was put before the VO filter in GC kits. Greasecar updated their kit (at least my kit) by putting the "T" after the VO filter to increase filter life. A separated updated (with "T" after VO filter) system setup diagram was attached to the Installation Manual in my '05 GC kit which I bought almost one year ago.

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'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20-30%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

Rolf's picture
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Joined: 12/12/2008

I have the older kit, I believe the T is before the filter so the back flush bypass the filter, I was thinking the diesel mixed into the veggie oil somehow is increasing  the filter life.  

veggpwr's picture
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Joined: 09/27/2010

I was thinking the diesel mixed into the veggie oil somehow is increasing  the filter life.
That's true.
Black flushing the filter will be better. You will have 100% diesel instead of VO sitting in the VO filter overnight.

__________________

'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20-30%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

BrianMiller's picture
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Joined: 05/11/2006

Rolf,
Something to think about.  If you are back flushing the VO filter, where is all that junk going to - tank, fuel, where?  Don't know how you are cleaning the WVO, but the frequent changing of VO filters might suggest that the cleaning process needs to be looked at more closely, IMHO....
 
 
 I agree...............

AleaAustin's picture
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Joined: 04/05/2012

Great I am alos going to try it to increase the millage of my car too.

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RenedeLathauwer's picture
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Joined: 08/14/2005

For those who are think/doing a back flush of the VO fuel filter, how many miles are you getting out a filter that entises you to "extend the filter by backflushing"?  The idea of a filter is to trap undesirable material.  Why would you want to flush that junk back into the fuel supply?  Filter are used as a protection for the IP.... IMHO, purchase and install a new filter when needed or place a vac or pressure gauge on the filter to monitor the filter.   

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veggpwr's picture
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Joined: 09/27/2010

For those who are think/doing a back flush of the VO fuel filter, how many miles are you getting out a filter that entises you to "extend the filter by backflushing"?
That's the original set up for my 05' GC kit from GC.
My first VO fuel filter was changed at 7500 miles. I didn't have a fuel pressure guage at that time.  I plan to change my next one at 10000 or 15000 miles. That would depends on what I judge from my pressure guage reading right before the high pressure pump.
 
Why would you want to flush that junk back into the fuel supply?
Since that's the set up of the GC kit, so GC switched the position of the "T" from before the VO filter to after the VO filter.
Why??? Justin should be in a better position to answer it.
I think if the purge time is correct there would be no junk in the VO tank. BUT why would I care about that little junk in the VO tank? They would stay in the VO tank and never get through the VO filter unless the VO filter element collapse.
 
My VO filter is 12 um (LFP944F).
My diesel filter is 5 um.
I do have a secondary 3 um fuel filter right before my HP pump and I have a pressure guage  between that filter and the HP pump.
The 3 um filter only last for around 4500-5000 miles.
I can tell when its time to change my diesel filter or VO filter or the 3 um filter.

__________________

'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20-30%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

JR3342's picture
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Joined: 02/23/2012

I don't back flush filter or mix d2. 9 mos on same Baldwin bf988 and filter gauge only moves a little at wot. Proper filtering before it hits the tank is key.

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92 300d gc kit.
99 f250 diy vegistroke under construction.

veggpwr's picture
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Joined: 09/27/2010

Proper filtering before it hits the tank is key.
This is always true.
Cannot substitute black flush VO filter for dirty veggie in tank!!!!!
 
It makes sense to me that it is better to have diesel than veggie in the VO filter before shut down for the next morning.
Anyway it is GC's idea to have the "T" after the VO filter.

__________________

'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20-30%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)