Do you know what, that’s really useful information. I appreciate you can’t put used gunk down the drains and obv diesel. But your explanations make a lotta senseI don’t dilute the Gunk, it’s neat. Works really well. I use Diesel on really thick horrid stuff. Once it’s fully filthy I pop it in a container for a couple of weeks. The crud settles out leaving ‘clean’ diesel once again. This gets reused for cleaning again. After a few uses its popped into a screw top container and left for the rubbish men. They collect waste oil around here. I only use a few litres so it’s never an issue to get rid of it properly.
For painted parts they go through Gunk after diesel and then the usual panel wipe etc. Diesel stops stuff rusting too, another bonus.
You can’t just drop used Gunk down the drain, it will contain oil and all sorts of nasties! So it’s the same disposal routine for me.
That’s a very thorough and well informed response and I applaud it. I’ve gone (old school) diesel coz I’ve a proper old Jerry can 1/2 full for filling up my old machine plant.. I’m only cleaning n refurbishing an old nippy record machine vice n will salvage that oil to reuse again. much appreciated to allThe Gunk ultra degreaser is a water-based product. It is thus a detergent rather than a solvent. It is very similar to generic traffic film remover. A reliable product with the same chemical composition is Screwfix' No Nonsense degreaser. These are both relatively odourless.
The next step up from this is a solvent-based emulsifiable degreaser. It is a lot better on really greasy stuff. It can be washed off with water (the emulsifiable bit) and disposed of down the drain. It leaves a slightly oily film on parts after rinsing, which gives a little corrosion protection. Everybody and their mother sells it (Rye Oils, just as an example Degreasant - Rye Oil come in and see what we have on offer). It smells very solventy and lingers on your clothes. JennyChem sell an odourless version (no experience of it).
Above that are pure solvent degreasers like kerosene (paraffin), heating oil, diesel, petrol, cellulose thinners, white spirit, etc. These cannot be poured down the drain.
For a really good clean, use the solvent-based emulsifiable one first, rinse with cold water, followed by a hot wash with the Screwfix one (around 4:1 dilution). Hairdryer or hot air gun to dry and then a corrosion protection spray.
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