Coolant filter

Clubbs

Well-Known Member
Joined
Jun 15, 2008
Location
Blounts Creek
My Cummins heater core keeps clogging up. Flushes easily, but it's a pain. Original coolant with 260k miles - all mine so I know it's never been serviced.

I suppose I could drain and refill the rad, but there's no rad cap (it all goes in the reservoir) usually a messy job. Not sure how I would flush the whole system out unless I pulled a rad hose and stuck the water hose down the thermostat housing.

Ordered the sinister diesel coolant filter kit today. Thoughts or recommendations for a neglected coolant system beyond the above.
 
Cummins actually makes systems for this.
Look up feet guard restore and restore +.
The names will fool ya.
Actually two totally different products with different intents, targets and uses. Really need to do both back to back

Personally I’m not a fan of bypass filtering. It doesnt work imho.

I’d look at inline filters.
Also …have you serviced the coolant if you haven’t changed it? Diesels need SCAs
 
I did a write up for this on the TDR forums. A coolant filter can help, but a drain and fill using Cummins Restore + will be more beneficial. My core is still OE at 260K on my '03 2500. The Sinister Diesel kit is poorly designed in my opinion.
 
Darkbloodmon said:
I did a write up for this on the TDR forums. A coolant filter can help, but a drain and fill using Cummins Restore + will be more beneficial. My core is still OE at 260K on my '03 2500. The Sinister Diesel kit is poorly designed in my opinion.
Click to expand...
You want to drain and fill with restore first. Drive shortly and drain and flush. Then fill with restore +…again circulate temp cycle and drain and flush and final fill with good coolant.

You do not want to run the vehicle with restore+ in the system long term
 
Ron said:
You want to drain and fill with restore first. Drive shortly and drain and flush. Then fill with restore +…again circulate temp cycle and drain and flush and final fill with good coolant.

You do not want to run the vehicle with restore+ in the system long term
Click to expand...

For clarification, I didn't mean use the Restore + as coolant. I meant a drain and fill service using Restore plus before adding fresh coolant.
 
So if I do the restore method and or bother flushing it out, what is the best method to flush the system? Seems most pull a radiator hose off and drain then refill a few times with straight water, then on the last fill it's all concentrate. Seems like I wouldnt really get that much gunk out.

I don't have any cooking issues other than I'm getting stuff in the heater core. I flushed it out with the water hose again yesterday, only takes about 20 minutes. So if I put the coolant filter on the inlet to the heater core should be problem solved. Guess I could "flush" the coolant with a couple drain and refills, but thought there might be a better way to do this.

Seems that if I take the thermostat out and flush the block out with a hose as after using the restore, and flush the rad out the same way. That ought to work other than leaving tap water in the block in some places. There's got to be a block drain plug somewhere, but I imagine it's nearly impossible to get to
 
I dont know where the block drains are on the 6.7s - on a 5.9 I could tell you - same for a Ford 6.0.

But there will be block drain plug(s).

The restore/restore+ will break loose more stuff that will otherwise continue to flake/slough off and clog stuff.
 
Clubbs said:
So if I do the restore method and or bother flushing it out, what is the best method to flush the system? Seems most pull a radiator hose off and drain then refill a few times with straight water, then on the last fill it's all concentrate. Seems like I wouldnt really get that much gunk out.

I don't have any cooking issues other than I'm getting stuff in the heater core. I flushed it out with the water hose again yesterday, only takes about 20 minutes. So if I put the coolant filter on the inlet to the heater core should be problem solved. Guess I could "flush" the coolant with a couple drain and refills, but thought there might be a better way to do this.

Seems that if I take the thermostat out and flush the block out with a hose as after using the restore, and flush the rad out the same way. That ought to work other than leaving tap water in the block in some places. There's got to be a block drain plug somewhere, but I imagine it's nearly impossible to get to
Click to expand...

Multiple block drains, but you could always just take the lower hose off with the front end pointing down. I used ramps on the rear axle.
 
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