Dpf clean

[PaulC5]

If diluting with water add the acid to the water and not the other way round so it does not spit out. Obviously wear safety goggles and rubber/PVC gloves gloves. This is probably in the vidoes but I have not watched them.

[gsc1ugs]

Is it better not to dilute? Sounds like i need 15 litres if doing a bath, may just block the ends and sensor holes and pour in from top

[mickthemaverick]

I used it straight from the bottles so I cannot comment on its effectiveness if diluted. However having used it I ran the used fluid through a very fine filter (the ones I used to clean chip oil to run in my car) to remove particles and returned it to the bottles for reuse. You can reclaim 70-80% depending on how you go about it. I have now cleaned 4 dpfs from the original batch I bought.

[Paul-R]

My opinion, based on how reactive the DPF powder was in the video with the 3:1 diluted 32% acid, is that it would be fine. If that equates to 8% concentration then I wouldn't go lower than 5% so, with 9.8% brand new acid, probably 3 parts acid to 1 part water.

Mick raises a very valid point though. If you dilute it you'll end up with more than the original 5 litres so what will you do with the excess?

[Peter Palmer]

I was surprised but some DPF's have a cat inside as well, even some of the completely sealed ones.

[gsc1ugs]

I have DPF off, big job, i want block each sensor opening and one end, what could i use please stop acid from leaking? Also, is 45 mins max or can it be more?
Thxs

[mickthemaverick]

Having never tried to do it that way I'm not sure that you will be able to block all the holes sufficiently. Can you not find a suitable container to submerge it in? I went for 45 mins on the advice of a friend and he did say don't overdo it!!

[gsc1ugs]

I have 5 litre so im wondering if rubber gloves or foil would block the whole, i dont have larger enough bowl

[mickthemaverick]

The only thing I would try for sealing would be self amalgamating tape but it would almost certainly be much cheaper to buy a baby bath like this, rather than the amount of tape you'd need, which wouldn't guarantee sealing anyway.

https://www.ebay.co.uk/itm/389840711495

[gsc1ugs]

Is that duck tape? Would tin foil not work with insulating tape? My dpf looks bigger than that bath in length

[mickthemaverick]

No its not duct tape. It is a purpose made tape for sealing plumbing joints and it is not cheap!!
https://ebay.us/m/X7vaoR

Check the measurements, my dpf jobs were all done in a baby bath of similar type, they are available in different sizes, the link I posted was just an example!

[myglaren]

Is it possible to fit bolts into the sensor locations to bung them up?
And have the DPF in a strong polythene bag to minimise the quantity of acid needed.

[PaulC5]

Tin foil (aluminium) will dissolve in hydrochloric acid.

[gsc1ugs]

I may try bolts that fit in the hole with some sort of glue

[gsc1ugs]

Would the fingers off marigold gloves be ok block extruding sensor holes tightened down with elastic?